ANR on session start when sending client info is enabled

[mnaturel]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Launch the sending of client info in a dedicated coroutine so that it does not block the main thread on app startup and leads to ANR.

Motivation and context

Closes #7604

Screenshots / GIFs

Tests

• Enable the labs flag about "Client info recording" in a previous version of the app
• Update the app with this fix
• The app should not block on startup

Tested devices

• Physical
• Emulator
• OS version(s): Android 11

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com./vector-im/element-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com./vector-im/element-android/blob/develop/CONTRIBUTING.md#changelog
• 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
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[jmartinesp]

LGTM!

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
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100.0% Coverage
0.0% Duplication