Allow non-interactive click on lockscreen to show bouncer

Clicking anywhere non-interactive on lockscreen will now show the
bouncer. This works with trackpad, mouse, or any pointing device that
can perform a PRIMARY_BUTTON action, that is not a SOURCE_TOUCHSCREEN.

This may include gamepads, trackballs, and many other devices besides
just mice and trackpads.

This retains the existing functionality of finger-tapping a
non-interactive location not pulling up the bouncer.

Fixes: 319809270
Test: manual - tested on tablet with trackpad attached
Test: manual - tested on tablet with mouse attached
Flag: com.android.systemui.non_touchscreen_devices_bypass_falsing
Change-Id: I1f9ad3217a40077a95f0a1fb5e474dce137ac35c