Add a inderminate progress bar when loging out and in Waiting state.

[bmarty]

Content

When logging out and the key back up state is Waiting, a new progress bar is displayed. After 2s a Text is displayed to, to ask the user to check their internet connection.

Note that if they are network error, we should be in the state BackupUploadState.SteadyException, so there is maybe an issue SDK side.

Motivation and context

Close internal issue.

Screenshots / GIFs

See recorded one

Tests

• Login to an account
• send/receive a few message to e2e room
• switch to airplane mode
• try to logout
• with a bit of luck you'll have unsaved keys and the new screen will be rendered.

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 24
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request title will be used in the release note, it clearly define what will change for the user
• Pull request includes screenshots or videos if containing UI changes
• You've made a self review of your PR

[github-actions]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.15%. Comparing base (e557ee2) to head (0833766).
Report is 11 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4538   +/-   ##
========================================
  Coverage    80.14%   80.15%           
========================================
  Files         2083     2083           
  Lines        54902    54927   +25     
  Branches      6848     6850    +2     
========================================
+ Hits         43999    44024   +25     
  Misses        8543     8543           
  Partials      2360     2360           

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