Split developer settings into 2 screens to be able to access global settings when no logged in.

[bmarty]

Content

Extract global settings (i.e. not related to a Matrix session) from developer settings screen, to be able to have an AppScope Node with the global settings, accessible when the user is not logged in yet.

Motivation and context

Be able to tweak feature flags and Rust trace level without being logged in. Helpful to change flags related to the login flow.

Screenshots / GIFs

See recorded screenshots and:

Screen_recording_20260415_121326.mp4

Tests

• Install and start the app
• you should see a settings icon at top start of the screen, if not in release build.
• click it
• you should be able to tweak FF and Rust log level.
• log in to the app
• navigate to the developer settings
• all the settings are here, a bit reordered (the global settings are rendered first)

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• This PR was made with the help of AI:
  • Yes. In this case, please request a review by Copilot.
  • No.
• Changes have been tested on an Android device or Android emulator with API 24
• 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 defines what will change for the user
• Pull request includes screenshots or videos if containing UI changes
• You've made a self review of your PR

[ganfra]

Nice, thanks!

[github-actions]

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[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

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 89.39394% with 21 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.08%. Comparing base (b6188a7) to head (8503d1c).
⚠️ Report is 20 commits behind head on develop.

Files with missing lines	Patch %	Lines
...loper/appsettings/AppDeveloperSettingsPresenter.kt	88.13%	1 Missing and 6 partials ⚠️
.../developer/appsettings/AppDeveloperSettingsView.kt	91.80%	1 Missing and 4 partials ⚠️
...s/preferences/impl/DefaultPreferencesEntryPoint.kt	0.00%	3 Missing ⚠️
...ures/preferences/test/FakePreferencesEntryPoint.kt	33.33%	2 Missing ⚠️
...gin/impl/screens/onboarding/OnBoardingPresenter.kt	0.00%	0 Missing and 1 partial ⚠️
...developer/appsettings/AppDeveloperSettingsEvent.kt	75.00%	1 Missing ⚠️
.../developer/appsettings/AppDeveloperSettingsPage.kt	92.85%	0 Missing and 1 partial ⚠️
...ences/impl/developer/di/DeveloperSettingsModule.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #6587   +/-   ##
========================================
  Coverage    81.07%   81.08%           
========================================
  Files         2604     2612    +8     
  Lines        72128    72193   +65     
  Branches      9348     9351    +3     
========================================
+ Hits         58479    58535   +56     
- Misses       10212    10218    +6     
- Partials      3437     3440    +3     

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