Merge "Fix UdfpsAccessibilityOverlayViewModel NPE" into main

     * accessibility event generated by the accessibilityLiveRegion.

     */

    override fun dispatchGenericMotionEvent(event: MotionEvent): Boolean {

        if (!this::udfpsAccessibilityOverlayViewModel.isInitialized) {

            // ViewModel is not ready, skip processing event

            return true

        }

        if (event.action == MotionEvent.ACTION_HOVER_ENTER) {

            mLastHoverEnterEventTime = event.eventTime

        }