Stablize ActivityTransitionTests by considering all insets

The test was failing to consider all the different possible insets and therefore asserting the colors of pixels on screen that shouldn't be checked.

Bug: 231742676
Bug: 228655522
Bug: 229822876
Test: atest CtsWindowManagerDeviceTestCases:ActivityTransitionTests
Change-Id: I3b849b04af4d69d3b659cfe2b7951d2cb02f7214