Disable timed dialog dismissal when a11y enabled

Only use mDismissDialogTimeout when accessibility is disabled. When
accessibility is enabled, do not dismiss dialog until sensor is touched,
or focus is moved away from dialog.

Flag: NONE
Test: atest SideFpsEventHandlerTest
Fixes: 324488176
Change-Id: I4c953f938bbc0102188cc87f12eb8617b00f6184
3 files changed