[Rich text editor] Fix keyboard closing after collapsing rich text editor

[jonnyandrew]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Fix keyboard closing after collapsing rich text editor.

Motivation and context

https://element-io.atlassian.net/browse/PSU-994

When enabling the full-screen mode of the rich text editor, the keyboard should be opened. However, when collapsing, the keyboard should not be closed if it is already open.

Screenshots / GIFs

expand-collapse-keyboard.webm

Tests

1. Enable the rich text editor via labs
2. Navigate to a room
3. Expand the text input
4. Check the keyboard is opened
5. Collapse the text input
6. Check the keyboard is closed

Tested devices

• Physical
• Emulator
• OS version(s): Android 13

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()

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[Florian14]

LGTM