Hide keyboard when exiting the room screen

[jmartinesp]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Adds a DisposableEffect to MessagesView so the keyboard is hidden when exiting the chat room screen. It seems to take a bit longer than usual, but at least it's hidden automatically.

Motivation and context

Fixes #1375.

Screenshots / GIFs

Screen_recording_20231018_132301.mp4

Tests

• Open a room.
• Tap on the message composer.
• Navigate to other screen (back, to the room settings, to some user's profile, to view a media file, etc.).

The keyboard should be hidden automatically.

Tested devices

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

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/vector-im/element-x-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-x-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

[sonarcloud]

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[ganfra]

This is sloooooow, can we make it faster to close? :(

[jmartinesp]

This is sloooooow, can we make it faster to close? :(

I think we'd have to find a way to trigger that view.hideKeyboard() when any node transition starts, instead of when it ends.

[jmartinesp]

Merging this as is, since all the other solutions were a lot more complex. We'll revisit the issue in the future.