More CTS for DPM.setScreenCaptureDisabled()

Make sure it works on existing windows too.

Bug: 74277398

Test: atest /android/pi-dev/cts/hostsidetests/devicepolicy/src/com/android/cts/devicepolicy/MixedDeviceOwnerTest.java#testScreenCaptureDisabled,testScreenCaptureDisabled_assist ; \
Test: atest /android/pi-dev/cts/hostsidetests/devicepolicy/src/com/android/cts/devicepolicy/MixedProfileOwnerTest.java#testScreenCaptureDisabled,testScreenCaptureDisabled_assist ; \
Test: atest /android/pi-dev/cts/hostsidetests/devicepolicy/src/com/android/cts/devicepolicy/MixedManagedProfileOwnerTest.java#testScreenCaptureDisabled,testScreenCaptureDisabled_assist

Change-Id: I3ed1c6e4f5ceec287121de7d562a646e263a736b
1 file changed