* feat: Display an icon in the room header for rooms with shared history
* fix: Apply suggestions from code review
- Simplifies `isRoomHistoryShared` expressions using type inferrence.
- Adds failure messages to unit test.
Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>
* fix: Remove extension method in favour of field on configuration.
* fix: Distinguish between `shared` and `worldReadable` icons.
* refactor: Use `RoomHistorySharingState` enum with extension methods
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Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>
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