This fixes an issue where the device was crashing and rebooting when
triple tapping to activate magnification at the same time as covering
the proxmity sensor while on a voice call.
Bug: b/236875528
Test: manual:
1. Perform a voice call
2. While on voice call, execute the "Triple tap on screen" gesture,
holding down your finger on the last tap and then cover the proximity
sensor.
3. The device should not crash
Change-Id: I9415c5b378b32342c016b17dfcef12cde45ce237
f7dcf990fd