Modernize Reading Mail Settings Using Jetpack Compose

[shamim-emon]

• Fixes Modernize Reading Mail Settings Using Jetpack Compose #10345

Implementation Highlights:

• Introduced a builder that uses existing Compose-based settings components to build the Reading Mail Settings UI.
• Added a contract , relevant useCases and ViewModel for Reading Mail Settings, introducing a unidirectional data flow.
• Replaced Reading Mail PreferenceScreen with Preference.
• Launched the Reading Mail Settings screen via FeatureLauncher using a deep link on preference click.
• Handled the Remove Account callback from Reading Mail Settings in Account Settings using the Activity Result API.