Add ellipse detection to UdfpsController

Enable with: adb shell cmd statusbar flag 2200 on (ExpandedOverlay) and
adb shell cmd statusbar flag 2202 on (EllipseDetection)

Bug: 257118043
Test: atest SystemUITests:com.android.systemui.biometrics
Change-Id: I143f7e5df71d3668a79cb898f618a749eef6f263