speed up CI by not running unneeded steps

[individual-it]

Description

skip unneeded work during test runs

Related Issue

part of owncloud/QA#621

Motivation and Context

less code == more better

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)

[codecov]

Codecov Report

Merging #35331 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #35331   +/-   ##
=======================================
  Coverage   48.87%   48.87%           
=======================================
  Files         109      109           
  Lines       10560    10560           
  Branches     1288     1288           
=======================================
  Hits         5161     5161           
  Misses       5022     5022           
  Partials      377      377

Flag	Coverage Δ
#javascript	53.69% <ø> (ø)	⬆️
#phpunit	38.17% <ø> (ø)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov]

Codecov Report

Merging #35331 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master   #35331   +/-   ##
=========================================
  Coverage     65.53%   65.53%           
  Complexity    18651    18651           
=========================================
  Files          1218     1218           
  Lines         70549    70549           
  Branches       1288     1288           
=========================================
  Hits          46236    46236           
  Misses        23936    23936           
  Partials        377      377

Flag	Coverage Δ	Complexity Δ
#javascript	53.69% <ø> (ø)	0 <ø> (ø)	⬇️
#phpunit	66.89% <ø> (ø)	18651 <ø> (ø)	⬇️

---

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Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[individual-it]

backport in #35333