[TP] Clock section to listen to selected clock

The clock section needs to listen to the currently selected clock

Test: Manually tetsted that the section was by default hidden. And shown
when flag was turned on https://screenshot.googleplex.com/BogjNvtmmc9RjsR
Bug: 262924055

Change-Id: I4a6df7823fc3a9846fcdbf52cd05e18bc118a9be