fix : hide keyboard when TextComposer is removed from composition

[ganfra]

Content

Take over #3968

Make sure the keyboard is closed when TextComposer is removed from composition.

Motivation and context

Closes #3572

Screenshots / GIFs

Tests

• Step 1
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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

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[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.

Project coverage is 83.10%. Comparing base (4bb6c24) to head (a475cb8).
Report is 12 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ies/designsystem/utils/HideKeyboardWhenDisposed.kt	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3985   +/-   ##
========================================
  Coverage    83.10%   83.10%           
========================================
  Files         1806     1807    +1     
  Lines        45703    45710    +7     
  Branches      5383     5383           
========================================
+ Hits         37980    37986    +6     
  Misses        5835     5835           
- Partials      1888     1889    +1     

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[bmarty]

LGTM, thanks!

[bmarty]

Maybe extract to a common module so it can be reused?

@Composable
fun HideKeyboardWhenDisposed() {
    val keyboardController = LocalSoftwareKeyboardController.current
    DisposableEffect(Unit) {
        onDispose {
            keyboardController?.hide()
        }
    }
}

[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

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