Change Details

[Part of ENG-843](https://linear.app/comm/issue/ENG-843) According to the linked article that @tomek linked in the comments of the task, we should use `<a>` in some places (where it displays a new chat).

[Part of ENG-843](https://linear.app/comm/issue/ENG-843) According to the linked article that @tomek linked in the comments of the task, we should use `<a>` in some places (where it brings user to a new chat/ screen). Because of these changes we no longer use the `Button` for the settings button, so the `round` variant is no longer used and could be removed.

[Part of ENG-843](https://linear.app/comm/issue/ENG-843) According to the linked article that @tomek linked in the comments of the task, we should use `<a>` in some places (where it displays a new chat)brings user to a new chat/ screen). Because of these changes we no longer use the `Button` for the settings button, so the `round` variant is no longer used and could be removed.