chore: unify jest maxWorkers usage on CI and turn off code coverage

[Hotell]

Previous Behavior

• v0,v8 have different jest setups in terms of leveraging threads on CI
• some projects run code-coverage in CI which slows down test execution by 10%

New Behavior

• v0,v8 uses unified maxWorkers setup on CI, (based on measurements it looks like ideal setup for our current CI resources )
  • 💡 what about v9?
    • in my initial experiments this was also enabled for v9. looks like until all perf improvements will land this will cause CI to run over 1 hour - so not part of this PR
• code-coverage has been disabled

Speed metrics:

Using code-coverage (react-northstar - up to 10% slowdown)

Run type	time	command
current	382 s	gulp test --config ./jest.config.js --coverage --maxWorkers=2 --no-cache
without codecov	340 s	gulp test --config ./jest.config.js --maxWorkers=2

Related Issue(s)

• Blocked by:
  • test(fluentui/react): fix initial global leaks that were causing OOM issues #27661
  • test: migrate all v9 libraries to use new conformance setup which improves test execution by approx 46% #27669
• Fixes partially Epic: road to faster CI/CD #27359
• Pre-requirement of ci: migrate to node 16  #27660

[size-auditor]

Asset size changes

Size Auditor did not detect a change in bundle size for any component!

Baseline commit: f0b05741d812ad90c52754b0b4035d5554cf2aa0 (build)

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 053eb56:

Sandbox	Source
@fluentui/react 8 starter	Configuration
@fluentui/react-components 9 starter	Configuration

[fabricteam]

Perf Analysis (@fluentui/react-components)

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
FluentProviderWithTheme	virtual-rerender	39	31	10	Possible regression

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
Avatar	mount	625	643	5000
Button	mount	294	313	5000
Field	mount	1147	1169	5000
FluentProvider	mount	728	711	5000
FluentProviderWithTheme	mount	87	83	10
FluentProviderWithTheme	virtual-rerender	39	31	10	Possible regression
FluentProviderWithTheme	virtual-rerender-with-unmount	78	78	10
MakeStyles	mount	862	887	50000
Persona	mount	1758	1688	5000
SpinButton	mount	1403	1393	5000
SwatchPicker	mount	1657	1660	5000

[fabricteam]

Perf Analysis (@fluentui/react-northstar)

Perf tests with no regressions

Scenario	Current PR Ticks	Baseline Ticks	Ratio
ButtonMinimalPerf.default	98	85	1.15:1
AttachmentSlotsPerf.default	647	584	1.11:1
ListWith60ListItems.default	384	357	1.08:1
BoxMinimalPerf.default	201	188	1.07:1
LabelMinimalPerf.default	226	211	1.07:1
ListMinimalPerf.default	329	307	1.07:1
SkeletonMinimalPerf.default	213	199	1.07:1
AvatarMinimalPerf.default	119	112	1.06:1
ItemLayoutMinimalPerf.default	734	691	1.06:1
ListNestedPerf.default	334	314	1.06:1
LoaderMinimalPerf.default	202	191	1.06:1
ChatDuplicateMessagesPerf.default	155	148	1.05:1
GridMinimalPerf.default	193	184	1.05:1
ProviderMergeThemesPerf.default	661	631	1.05:1
AnimationMinimalPerf.default	311	299	1.04:1
VideoMinimalPerf.default	435	419	1.04:1
ChatMinimalPerf.default	443	430	1.03:1
RadioGroupMinimalPerf.default	267	259	1.03:1
ReactionMinimalPerf.default	215	209	1.03:1
TooltipMinimalPerf.default	1290	1249	1.03:1
DialogMinimalPerf.default	453	446	1.02:1
DividerMinimalPerf.default	213	208	1.02:1
DropdownMinimalPerf.default	1442	1411	1.02:1
ImageMinimalPerf.default	228	223	1.02:1
MenuButtonMinimalPerf.default	964	943	1.02:1
CustomToolbarPrototype.default	1475	1446	1.02:1
TreeMinimalPerf.default	502	492	1.02:1
ButtonSlotsPerf.default	311	309	1.01:1
EmbedMinimalPerf.default	1868	1843	1.01:1
FlexMinimalPerf.default	155	153	1.01:1
FormMinimalPerf.default	218	215	1.01:1
SplitButtonMinimalPerf.default	2303	2287	1.01:1
TableManyItemsPerf.default	1121	1107	1.01:1
TableMinimalPerf.default	237	234	1.01:1
AccordionMinimalPerf.default	86	86	1:1
HeaderMinimalPerf.default	203	203	1:1
RefMinimalPerf.default	109	109	1:1
SegmentMinimalPerf.default	193	193	1:1
AlertMinimalPerf.default	162	163	0.99:1
AttachmentMinimalPerf.default	81	82	0.99:1
CardMinimalPerf.default	313	315	0.99:1
CarouselMinimalPerf.default	263	267	0.99:1
CheckboxMinimalPerf.default	1142	1149	0.99:1
HeaderSlotsPerf.default	480	484	0.99:1
InputMinimalPerf.default	557	560	0.99:1
LayoutMinimalPerf.default	206	208	0.99:1
MenuMinimalPerf.default	497	502	0.99:1
SliderMinimalPerf.default	729	738	0.99:1
ToolbarMinimalPerf.default	544	551	0.99:1
TreeWith60ListItems.default	89	90	0.99:1
ButtonOverridesMissPerf.default	646	662	0.98:1
DatepickerMinimalPerf.default	3573	3629	0.98:1
IconMinimalPerf.default	392	398	0.98:1
TextMinimalPerf.default	195	198	0.98:1
DropdownManyItemsPerf.default	384	394	0.97:1
PopupMinimalPerf.default	348	358	0.97:1
ChatWithPopoverPerf.default	198	207	0.96:1
ListCommonPerf.default	384	399	0.96:1
ProviderMinimalPerf.default	198	207	0.96:1
TextAreaMinimalPerf.default	280	295	0.95:1
RosterPerf.default	1568	1678	0.93:1
StatusMinimalPerf.default	384	413	0.93:1
PortalMinimalPerf.default	81	88	0.92:1

[fabricteam]

📊 Bundle size report

✅ No changes found

[fabricteam]

🕵 FluentUI-v0 No visual regressions between this PR and main

[fabricteam]

🕵 fluentuiv9 No visual regressions between this PR and main

[fabricteam]

Perf Analysis (@fluentui/react)

No significant results to display.

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
BaseButton	mount	619	641	5000
Breadcrumb	mount	1679	1654	1000
Checkbox	mount	1711	1710	5000
CheckboxBase	mount	1493	1516	5000
ChoiceGroup	mount	2980	2965	5000
ComboBox	mount	682	679	1000
CommandBar	mount	6536	6497	1000
ContextualMenu	mount	11499	11635	1000
DefaultButton	mount	794	781	5000
DetailsRow	mount	2217	2206	5000
DetailsRowFast	mount	2212	2262	5000
DetailsRowNoStyles	mount	2088	2096	5000
Dialog	mount	2880	2730	1000
DocumentCardTitle	mount	222	231	1000
Dropdown	mount	1993	1995	5000
FocusTrapZone	mount	1158	1144	5000
FocusZone	mount	1095	1059	5000
GroupedList	mount	42181	42350	2
GroupedList	virtual-rerender	20276	20259	2
GroupedList	virtual-rerender-with-unmount	51375	51580	2
GroupedListV2	mount	229	226	2
GroupedListV2	virtual-rerender	205	216	2
GroupedListV2	virtual-rerender-with-unmount	229	230	2
IconButton	mount	1099	1134	5000
Label	mount	343	356	5000
Layer	mount	2765	2766	5000
Link	mount	399	405	5000
MenuButton	mount	971	983	5000
MessageBar	mount	21193	21200	5000
Nav	mount	2030	2042	1000
OverflowSet	mount	793	789	5000
Panel	mount	1913	1851	1000
Persona	mount	764	741	1000
Pivot	mount	888	897	1000
PrimaryButton	mount	918	931	5000
Rating	mount	4637	4637	5000
SearchBox	mount	942	920	5000
Shimmer	mount	1921	1928	5000
Slider	mount	1329	1314	5000
SpinButton	mount	2967	2986	5000
Spinner	mount	399	398	5000
SplitButton	mount	1861	1886	5000
Stack	mount	416	414	5000
StackWithIntrinsicChildren	mount	885	878	5000
StackWithTextChildren	mount	2735	2754	5000
SwatchColorPicker	mount	6392	6424	5000
TagPicker	mount	1460	1477	5000
Text	mount	394	402	5000
TextField	mount	935	908	5000
ThemeProvider	mount	849	848	5000
ThemeProvider	virtual-rerender	579	586	5000
ThemeProvider	virtual-rerender-with-unmount	1289	1296	5000
Toggle	mount	623	620	5000
buttonNative	mount	194	195	5000

[fabricteam]

🕵 fluentui-web-components-v3 No visual regressions between this PR and main

[fabricteam]

🕵 fluentuiv8 No visual regressions between this PR and main

[fabricteam]

🕵 FluentUIV0 No visual regressions between this PR and main