Crop touchable region to surface bounds when updating an InputChannel

This reverts some logic for setting the touchable region that was made
in ag/17050822.

Bug: 254681548
Test: presubmit
Change-Id: I929dd28c782992445882a2d61105aa3e5a0a99bc
(cherry picked from commit 3823c8c062e7d148dce4e48dc496c0fca827a581)
1 file changed