Fix a few FFI leaks
These are instances where we obtain an FFIObject and don't call
Close on it to release the underlying reference on the Rust side.
The worst instance here was leaking an object per room member
every time we refreshed the member list
* Use user friendly error messages in login following iOS logic, fix dialog colors.
* Use `AlertDialogDefaults` for the default properties of dialogs
* Improve Maestro tests with wrong password dialog
* Add tests for error messages
* Fix dark theme
* First attempt at replicating iOS' UI & flows.
* Try to fix Maestro tests
* Add error dialogs and tests
* Remove unused modifiers
* Try to fix detekt issues
* Tidy up maestro login flow a bit
* Add `CompoundColorPalette` with some needed colors
* Fixes to designs
* Fix detekt issues
* More design fixes
* Some other minor design fixes
* Add changelog
* Minor tweaks.
* Remove legacy dark material theme as it's no longer needed.
* Move sliding sync 'learn more' url to constants object
* Remove unused focusManager
* Change how the displayed homeserver works
* Keep user input as homeserver if it's valid
* Remove `CompoundColorPalette`, try to fix issue when toggling dark mode.
* Add `@Stable` to the theme, adjust how it toggles in dark mode
* Remove unused strings
* Update screenshots
* Re-organize components in LoginRootScreen
* Bump min coverage to 55, max to 60
* Always replace the snapshots contents when running `recordPaparazzi`
* Fix dark theme preview of components using content colors
* Add `BackButton` component
* Handle errors with dialogs in a generic way
* Align our Dialog components with the designs, use them were needed
* Use a `MatrixHomeserverDetails` data class instead of just an URL.
* `AuthenticationService.getHomeserverDetails()` now returns a `StateFlow`.
Also, try to fix coverage issues in tests.
