* Use shared recent emoji reactions from account data
- Add `AddRecentEmoji` and `GetRecentEmojis` use cases to avoid injecting the whole `MatrixClient` for just one of these operations.
- Update the UI and logic of the emoji picker and message context menu to include the recent emojis.
- Add `CoroutineDispatchers.Default` with the defaults coroutines to use in the app for ease of use.
* Instead of replacing suggested emojis, concatenate recent ones removing duplicates
* Update screenshots
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Co-authored-by: ElementBot <android@element.io>
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