Hide deactivate account section in case of account managed externally.

[bmarty]

Type of change

• Feature
• Bugfix
• Technical
• Other : EA: The app should hide account deactivation in OIDC-aware mode #8619

Content

Hide deactivate account setting if account is manged externally.

Motivation and context

Closes #8619

Screenshots / GIFs

Tests

• connect to a matrix.org account. Observe that you can deactivate the account from the app (general settings).
• connect to a element.io account. Observe that you cannot deactivate the account from the app (general settings).

Tested devices

• Physical
• Emulator
• OS version(s):

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()

[bmarty]

@hughns I have updated the PR.

[sonarcloud]

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0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

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[hughns]

I've checked this locally and looks good.