[27/n] Improve spyOn() on specific Robot

We leave to each Robot the responsibility to spyOn()
only the required objects.

Flag: EXEMPT refactor
Fix: 351763164
Test: atest WmTests:AppCompatAspectRatioOverridesTest
Test: atest WmTests:AppCompatCameraOverridesTest
Test: atest WmTests:AppCompatCameraPolicyTest
Test: atest WmTests:AppCompatOrientationOverridesTest
Test: atest WmTests:AppCompatOrientationPolicyTest
Test: atest WmTests:AppCompatReachabilityOverridesTest
Test: atest WmTests:AppCompatReachabilityPolicyTest
Test: atest WmTests:TransparentPolicyTest
Test: atest WmTests:AppCompatUtilsTest

Change-Id: I42a474c44b3d597b38dec40dd814595bab61e4f0