Most of the tests in `LeaveRoomPresenterImplTest.kt` where using `UnconfinedTestDispatcher` which was conflating some of the state returned by the presenter. This prevented to test one specific case which had been left with an `@Ignore` annotation.
This PR switches to `StandardTestDispatcher` so that the ignored test case can work and also fixes some other test cases whose behavior is now more correct under the `StandardTestDispatcher`.
Also updates our test factory method for `CoroutineDispatchers` to more easily obtain a `CoroutineDispatchers` which uses `StandardTestDispatcher`.
- Adds `ModalBottomSheet` to our design components (it wraps the homonimous Material3 one).
- Adds a bottom sheet to the Room list using the aforementioned design component.
- Adds navigation from the room list to a room detail (context menu "Settings" action).
- Consolidates the "leave room flow" into a new `leaveroom` module used by both the room list and the room details.
- Adds progress indicator to the leave room flow
- Uses new `leaveroom` module in `roomdetails` module too.
Parent issue:
- https://github.com/vector-im/element-x-android/issues/261
