[Media TTT] Add the click listener for the undo button.

Fixes: 203800665
Test: MediaTttChipControllerTest
Test: `adb shell cmd statusbar media-ttt-chip-add Tablet
TransferSucceeded` then tap undo button -> log statement that the undo
runnable was triggered

Change-Id: Iad10917f375e0fc35ca41265533296a67485e0ba