Move currentTabType state out of the inner class component state, and move it out to the wrapping "Connected" functional component.
As part of the work to refactor ThreadSettingsModal… specifically to turn it into a functional component.
Depends on D3757
Then why are we keeping styles like border and border-radius?
Don't these styles also affect the <textarea> tag? Are you sure we want to be removing these styles for that as well? Or should we break this into two separate selectors (one for input and another for textarea)?