Generate ACTION_CANCEL event when screen turned off by proximity sensor.

When using PROXIMITY_SCREEN_OFF_WAKE_LOCK and screen was turned off by proximity sensor,
input service should generate ACTION_CANCEL, same as display turned off by pressing power button.

Bug: 154074380
Test: atest libgui_test
Change-Id: I72a10c98adad4a236dbd445cefe5f37c4ec3fd81
Merged-In: I72a10c98adad4a236dbd445cefe5f37c4ec3fd81