* Add floating date indicator while scrolling the timeline (#6433)
* Add `FeatureFlags.FloatingDateBadge`. This enables displaying the floating date badge in the timeline as you scroll.
* Don't display the floating badge if the timeline isn't reversed. Otherwise, this will affect talkback users and break the existing navigation
* Use `TimelineItem.formattedDate()` to get the date to display. Always try finding the closest one (usually it will be just the 1st one we try).
* Align designs with iOS. Also fix shadows in fade animation by adding some paddings.
* Update screenshots
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Co-authored-by: Gianluca Iavicoli <gianluca.iavicoli04@gmail.com>
Co-authored-by: ElementBot <android@element.io>
* Add `Theme.Black` to the `Theme` enum and update `isDark()` to include it.
* Refactor `ElementTheme` to accept a `Theme` object instead of a `darkTheme` boolean, allowing for more specific color mapping (e.g., setting `bgCanvasDefault` to `Color.Black` for the Black theme).
* Update `AdvancedSettingsPresenter` and `AdvancedSettingsState` to include "Black" as a user-selectable theme option.
* Adjust `ElementThemeApp` and `MaterialTextPreview` to handle the expanded theme selection.
* Add `ElementPreviewBlack` and update existing preview components to support the new theme.
* Update Konsist tests to ensure `@PreviewsDayNight` annotated functions don't have "BlackPreview" suffix.
* Add code to help debugging the saved nav state graph: this would help us diagnose the `TransactionTooLargeException` reports we've been seeing for months.
* feat: Add history sharing badges to room details view
* tests: Add snapshots for history sharing room details badges
* fix: Disable soft-wrapping in badges, use FlowRow
* tests: Add unit test for `RoomDetailsState` and history sharing badges.
* tests: Add `MatrixBadgeAtomNeutralWrappingPreview` to exceptions
* chore: Re-order `MatrixBadgeAtom` previews
* fix: Add `Immutable` annotation to `RoomHistoryVisibility`.
* fix: Correct translation for shared badge
