Correct contextual button width, height and touch area

Side note: this is unrelated to NearestTouchFrame

Bug: 313371759
Bug: 230395757
Test: https://screenshot.googleplex.com/6mF4ZPSob6z55Nh
Change-Id: I7e5217bef4b2cfb6d14d62d107e75b1267ffd2f4
7 files changed