Improve error handling in room stats and attendance

[SamuelWei]

Fixes #1535

Type (Highlight the corresponding type)

• Bugfix
• Feature
• Documentation
• Refactoring (e.g. Style updates, Test implementation, etc.): Error Handling
• Other (please describe):

Checklist

• Code updated to current develop branch head
• Passes CI checks
• Is a part of an issue
• Tests added for the bugfix or newly implemented feature, describe below why if not
• Changelog is updated
• Documentation of code and features exists

Changes

• Improve error handling in room statistics dialog
• Improve error handling in room attendance dialog

[codecov]

Codecov Report

Attention: Patch coverage is 13.33333% with 26 lines in your changes missing coverage. Please review.

Project coverage is 62.77%. Comparing base (1b6e457) to head (89eb069).

Files with missing lines	Patch %	Lines
...s/js/components/RoomTabHistoryAttendanceButton.vue	11.11%	16 Missing ⚠️
...es/js/components/RoomTabHistoryStatisticButton.vue	16.66%	10 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (1b6e457) and HEAD (89eb069). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (1b6e457)	HEAD (89eb069)
	6	4

Additional details and impacted files

@@              Coverage Diff               @@
##             develop    #1600       +/-   ##
==============================================
- Coverage      80.85%   62.77%   -18.08%     
==============================================
  Files            359      157      -202     
  Lines           9141     4559     -4582     
  Branches         845      853        +8     
==============================================
- Hits            7391     2862     -4529     
+ Misses          1750     1697       -53     

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[cypress]

PILOS    Run #1143

Run Properties:   Failed #1143  •  89eb069b9f: Improve error handling in room stats and attendance

Project	PILOS
Branch Review	1535-improve-error-handling-in-room-history-components
Run status	Failed #1143
Run duration	12m 53s
Commit	89eb069b9f: Improve error handling in room stats and attendance
Committer	Samuel Weirich
View all properties for this run ↗︎

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Test results
Failures	2
Flaky	0
Pending	0
Skipped	0
Passing	234
View all changes introduced in this branch ↗︎

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Tests for review

  tests/Frontend/e2e/RoomsViewHistoryMeetingActions.cy.js • 2 failed tests • Frontend tests

View Output

Test		Artifacts
Rooms view history meeting actions > show stats		Test Replay Screenshots
Rooms view history meeting actions > show attendance		Test Replay Screenshots