test adding a user to a group after the group received a share

[individual-it]

Description

test sharing with a group and then adding a user to that group

Motivation and Context

the changed webUI test did do that, but not intentionally. Because that scenario does not work with user-key encryption the test did fail. see owncloud/encryption#132
So this PR make the UI test work in encryption and adds more intentional tests for this scenario

How Has This Been Tested?

🤖

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

• Backport (if applicable set "backport-request" label and remove when the backport was done)

[individual-it]

backport in #35517

[codecov]

Codecov Report

Merging #35516 into master will decrease coverage by 0.25%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master   #35516      +/-   ##
============================================
- Coverage     65.93%   65.68%   -0.26%     
  Complexity    18735    18735              
============================================
  Files          1160     1221      +61     
  Lines         63470    70793    +7323     
  Branches          0     1288    +1288     
============================================
+ Hits          41852    46503    +4651     
- Misses        21618    23913    +2295     
- Partials          0      377     +377

Flag	Coverage Δ	Complexity Δ
#javascript	53.69% <ø> (?)	0 <ø> (?)
#phpunit	67.06% <ø> (+1.12%)	18735 <ø> (ø)	⬇️

Impacted Files	Coverage Δ	Complexity Δ
lib/private/Files/Storage/DAV.php	81.09% <0%> (-8.47%)	0% <0%> (ø)
core/js/oc-dialogs.js	2.66% <0%> (ø)	0% <0%> (?)
core/js/oc-backbone.js	50% <0%> (ø)	0% <0%> (?)
settings/js/admin-apps.js	6.46% <0%> (ø)	0% <0%> (?)
core/js/config.js	3.33% <0%> (ø)	0% <0%> (?)
apps/files_sharing/js/external.js	77.96% <0%> (ø)	0% <0%> (?)
apps/comments/js/commentmodel.js	100% <0%> (ø)	0% <0%> (?)
core/js/l10n.js	90.54% <0%> (ø)	0% <0%> (?)
core/js/js.js	55.05% <0%> (ø)	0% <0%> (?)
core/js/systemtags/systemtags.js	90% <0%> (ø)	0% <0%> (?)
... and 74 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ab8d8e9...b47aa5e. Read the comment docs.

[codecov]

Codecov Report

Merging #35516 into master will decrease coverage by 0.25%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master   #35516      +/-   ##
============================================
- Coverage     65.93%   65.68%   -0.26%     
  Complexity    18735    18735              
============================================
  Files          1160     1221      +61     
  Lines         63470    70793    +7323     
  Branches          0     1288    +1288     
============================================
+ Hits          41852    46503    +4651     
- Misses        21618    23913    +2295     
- Partials          0      377     +377

Flag	Coverage Δ	Complexity Δ
#javascript	53.69% <ø> (?)	0 <ø> (?)
#phpunit	67.06% <ø> (+1.12%)	18735 <ø> (ø)	⬇️

Impacted Files	Coverage Δ	Complexity Δ
lib/private/Files/Storage/DAV.php	81.09% <0%> (-8.47%)	0% <0%> (ø)
core/js/oc-dialogs.js	2.66% <0%> (ø)	0% <0%> (?)
core/js/oc-backbone.js	50% <0%> (ø)	0% <0%> (?)
settings/js/admin-apps.js	6.46% <0%> (ø)	0% <0%> (?)
core/js/config.js	3.33% <0%> (ø)	0% <0%> (?)
apps/files_sharing/js/external.js	77.96% <0%> (ø)	0% <0%> (?)
apps/comments/js/commentmodel.js	100% <0%> (ø)	0% <0%> (?)
core/js/l10n.js	90.54% <0%> (ø)	0% <0%> (?)
core/js/js.js	55.05% <0%> (ø)	0% <0%> (?)
core/js/systemtags/systemtags.js	90% <0%> (ø)	0% <0%> (?)
... and 74 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ab8d8e9...b47aa5e. Read the comment docs.

[codecov]

Codecov Report

Merging #35516 into master will decrease coverage by 0.25%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master   #35516      +/-   ##
============================================
- Coverage     65.93%   65.68%   -0.26%     
  Complexity    18735    18735              
============================================
  Files          1160     1221      +61     
  Lines         63470    70793    +7323     
  Branches          0     1288    +1288     
============================================
+ Hits          41852    46503    +4651     
- Misses        21618    23913    +2295     
- Partials          0      377     +377

Flag	Coverage Δ	Complexity Δ
#javascript	53.69% <ø> (?)	0 <ø> (?)
#phpunit	67.06% <ø> (+1.12%)	18735 <ø> (ø)	⬇️

Impacted Files	Coverage Δ	Complexity Δ
lib/private/Files/Storage/DAV.php	81.09% <0%> (-8.47%)	0% <0%> (ø)
core/js/oc-dialogs.js	2.66% <0%> (ø)	0% <0%> (?)
core/js/oc-backbone.js	50% <0%> (ø)	0% <0%> (?)
settings/js/admin-apps.js	6.46% <0%> (ø)	0% <0%> (?)
core/js/config.js	3.33% <0%> (ø)	0% <0%> (?)
apps/files_sharing/js/external.js	77.96% <0%> (ø)	0% <0%> (?)
apps/comments/js/commentmodel.js	100% <0%> (ø)	0% <0%> (?)
core/js/l10n.js	90.54% <0%> (ø)	0% <0%> (?)
core/js/js.js	55.05% <0%> (ø)	0% <0%> (?)
core/js/systemtags/systemtags.js	90% <0%> (ø)	0% <0%> (?)
... and 74 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ab8d8e9...b47aa5e. Read the comment docs.