MR 2: Merge upstream v6.712 changes

Description

This MR contains upstream changes from 42a93bcf.

The changes will be split to multiple MRs. More to expect in the future MRs.

Tests

./gradlew clean assembleDebug test

Issues

https://gitlab.e.foundation/e/os/backlog/-/issues/2739

10 commandments of code reviews

👪 ❤ https://gitlab.e.foundation/internal/wiki/-/wikis/mobile-team/guidelines/Code-review

Summary by CodeRabbit

Release Notes

• New Features

  • Introduced AccountServerSettingsUpdater for updating email account server settings.
  • Enhanced error handling with new result types for account updates.

• Bug Fixes

  • Improved error message handling for email address input in the UI.

• Documentation

  • Updated instructions for creating F-Droid builds.
  • Added a template for documenting architectural decision records (ADRs).

• Tests

  • Added comprehensive unit tests for the new AccountServerSettingsUpdater.
  • Updated existing tests for clarity and consistency.