Pilfer pointers on UDFPS sensor

Pilfer pointers when touch is valid overlap with sensor or within the
sensor area. This prevents long presses from passing through to keyguard.

Bug: 272210321
Test: atest SystemUITests:com.android.systemui.biometrics
Change-Id: Id9759b2f1f77fe23e6f33e78f2abe66b73571f25