Change Details

Solution for [ENG-4551](https://linear.app/comm/issue/ENG-4551/create-custom-thread-selector). This diff introduces a custom data structure for chat mentions. We require this type of data structure to efficiently retrieve potential chat mention candidates.

Solution for [ENG-4551](https://linear.app/comm/issue/ENG-4551/create-custom-thread-selector). This diff introduces a custom data structure for chat mentions. We require this type of data structure to efficiently retrieve potential chat mention candidates.

Solution for [ENG-4551](https://linear.app/comm/issue/ENG-4551/create-custom-thread-selector). This diff introduces a custom data structure for chat mentions. We require this type of data structure to efficiently retrieve potential chat mention candidates.