Change Details

TODO Depends on D8851.

Solution for [ENG-4560](https://linear.app/comm/issue/ENG-4560/bold-mentions-when-user-has-access-to-given-chat). This diff creates a new component for chat mentions which handles bolding mentions when user has access to given chat. Depends on D8851.

TODOSolution for [ENG-4560](https://linear.app/comm/issue/ENG-4560/bold-mentions-when-user-has-access-to-given-chat). This diff creates a new component for chat mentions which handles bolding mentions when user has access to given chat. Depends on D8851.