Add falsing to undo button

Add falsing to undo button in the tap-to-transfer chip window.
So when it appears on lock screen, we can prevent unintended taps by
user.

Bug: 236956557
Test: MediaTttChipControllerSenderTest
Change-Id: I3a8f34146af7992b745e4dfb7b857cd9eac174bf
5 files changed