Show error screens in group calls

[robintown]

Content

Element Call now sends a 'close' widget action when the widget is ready to close. Usually this will be sent immediately after the 'hangup' action, but it could be sent later if the widget wants to present an error screen before closing. So by listening to the 'close' action rather than the 'hangup' action, we get to see these error screens.

Motivation and context

element-hq/element-call#2955
Depends on element-hq/element-call#3011

Screenshots / GIFs

Tests

• Set Element Call base URL to https://pr3011--element-call.netlify.app/
• Join a call
• Turn on airplane mode
• Wait 45 seconds
• After some time, the call UI should disappear but the app should still remain on the 'Element Call' page. This looks broken, but is actually a successful indicator that Element Call is able to show error screens while disconnected from the call. We just need to fix some bugs on the Element Call side now so that you actually see the 'Connection lost' error screen here.

Tested devices

• Physical
• Emulator
• OS version(s): LineageOS 22.1 (Android 15)

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]

Thank you for your contribution! Here are a few things to check in the PR to ensure it's reviewed as quickly as possible:

• Your branch should be based on origin/develop, at least when it was created.
• The title of the PR will be used for release notes, so it needs to describe the change visible to the user.
• The test pass locally running ./gradlew test.
• The code quality check suite pass locally running ./gradlew runQualityChecks.
• If you modified anything related to the UI, including previews, you'll have to run the Record screenshots GH action in your forked repo: that will generate compatible new screenshots. However, given Github Actions limitations, it will prevent the CI from running temporarily, until you upload a new commit after that one. To do so, just pull the latest changes and push an empty commit.

[robintown]

The test failure looks unrelated, would someone on the team try re-running it for me?

[bmarty]

I'll take care of the failing test, you're right, it's unrelated.
This PR can be merged, thanks!

[robintown]

OK, please don't merge it until I've taken the 'blocked' label off though, as I'm waiting for the linked Element Call change to be ready

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.11%. Comparing base (0f888ae) to head (09231ff).
Report is 119 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4297      +/-   ##
===========================================
- Coverage    80.12%   80.11%   -0.01%     
===========================================
  Files         2053     2053              
  Lines        54615    54616       +1     
  Branches      6686     6686              
===========================================
- Hits         43761    43758       -3     
- Misses        8565     8566       +1     
- Partials      2289     2292       +3     

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[hughns]

This should not be merged until the criteria at element-hq/element-call#2955 (comment) are met.

[robintown]

@bmarty You can merge this now, thank you!