Fix multiple cypress issues

[SystemKeeper]

Fixes:

• Force click on activity tab, as it could be under a toast
• Wait for preview to be generated, to ensure the file is not locked by preview generation
• Reload the page after adding a comment (as is done for tags)
• Don't stop containers on CI to extract nextcloud logs
• Record video when job runs in debug mode
• Reduce containers from 3 -> 2 as we only have 2 suites anyway (IMO it can also be just 1...)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 30.80%. Comparing base (dde1600) to head (a4683fd).
Report is 17 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@## master #1983 +/- ##
=======================================
Coverage 30.80% 30.80% =======================================
Files 43 43 Lines 1620 1620 Branches 110 110 =======================================
Hits 499 499 Misses 1095 1095 Partials 26 26 

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[cypress]

ActivityRun #2513

Run Properties: Passed #2513 • d59b9e1a97: fix(cypress): Force click on activity tab

Project	Activity
Branch Review	fix/noid/cypress-force-activity-tab
Run status	Passed #2513
Run duration	02m 17s
Commit	d59b9e1a97: fix(cypress): Force click on activity tab
Committer	Marcel Müller
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	1
Pending	0
Skipped	0
Passing	10
View all changes introduced in this branch ↗︎

[artonge]

/backport to stable31