Ensure that the SDK is syncing during an incoming call so that the app can cancel the notification

[bmarty]

Content

Ensure that the SDK is syncing during an incoming call so that the application can detect if the call has been answered on another session.This is dealing with the case the application is not in foreground.

Motivation and context

Ensure the call stops ringing if answered elsewhere.

Screenshots / GIFs

On the left: Alice EW
In the middle: Bob's EW
On the right: Bob's EX

Tests

• EX is killed on Bob's device
• Alice starts a call in her DM with Bob
• Bob answers the call using Element Web
• Bob's EX stops ringing

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 23
• 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
• Pull request includes a sign off
• 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

Attention: Patch coverage is 80.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 82.97%. Comparing base (20674dd) to head (031ed22).
Report is 7 commits behind head on develop.

Files with missing lines	Patch %	Lines
...raries/push/impl/push/OnNotifiableEventReceived.kt	0.00%	2 Missing ⚠️
.../libraries/push/impl/push/SyncOnNotifiableEvent.kt	87.50%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3931      +/-   ##
===========================================
- Coverage    82.97%   82.97%   -0.01%     
===========================================
  Files         1789     1789              
  Lines        45222    45231       +9     
  Branches      5337     5339       +2     
===========================================
+ Hits         37522    37529       +7     
- Misses        5825     5827       +2     
  Partials      1875     1875              

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[fkwp]

tested with real device and it worked:

• Stop ringing if the caller stops the call early
• stop ringing if you pickup the call with another device

[toger5]

@bmarty for me it still does not work if my phone is in standby.
It does work however if not in standby.