Add missing accessibility labels on All Chats buttons.

[pixlwave]

The User Menu and Spaces buttons were just described as "Button".

Part of #6580, but doesn't close it as the spaces sheet needs more work to properly define accessibility elements and test across iOS 14-16.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
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No Coverage information
No Duplication information

[github-actions]

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[codecov]

Codecov Report

Base: 10.52% // Head: 10.01% // Decreases project coverage by -0.51% ⚠️

Coverage data is based on head (05db031) compared to base (26665fd).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head 05db031 differs from pull request most recent head aaf4d86. Consider uploading reports for the commit aaf4d86 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6760      +/-   ##
===========================================
- Coverage    10.52%   10.01%   -0.52%     
===========================================
  Files         1501     1490      -11     
  Lines       151352   150811     -541     
  Branches     61078    60859     -219     
===========================================
- Hits         15934    15104     -830     
- Misses      134849   135159     +310     
+ Partials       569      548      -21     

Impacted Files	Coverage Δ
...ot/Modules/Home/AllChats/AllChatsCoordinator.swift	22.15% <100.00%> (+0.11%)	⬆️
...Modules/Home/AllChats/AllChatsViewController.swift	28.74% <100.00%> (+0.39%)	⬆️
...erSessionsOverview/View/UserSessionsOverview.swift	0.00% <0.00%> (-87.28%)	⬇️
...ervice/MatrixSDK/UserSessionsOverviewService.swift	0.00% <0.00%> (-85.44%)	⬇️
...serSessionsOverview/View/UserSessionListItem.swift	0.00% <0.00%> (-58.00%)	⬇️
...otSwiftUI/Modules/Common/Util/BorderModifier.swift	57.14% <0.00%> (-42.86%)	⬇️
...calAuthentication/LocalAuthenticationService.swift	27.27% <0.00%> (-27.28%)	⬇️
...ssionsOverview/UserSessionsOverviewViewModel.swift	46.47% <0.00%> (-25.40%)	⬇️
...mUpgrade/Service/Mock/MockRoomUpgradeService.swift	70.00% <0.00%> (-17.50%)	⬇️
...onsOverview/View/UserSessionListItemViewData.swift	84.84% <0.00%> (-15.16%)	⬇️
... and 385 more

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[aringenbach]

LGTM