Fix swipe for notification default should be on instead of off

Set newOneHandedSettingsObserver() defaut value 0 to prevent
blocking swipe-down notification's OneHandedModeInputConsumer
.onStartGestureDetected() when device first booting.

Bug: 175084985

Test: rebuild ROM image and manual
Change-Id: I5fe7d4036ac74682ae72cf210e8b40c63ceb53e1
1 file changed