Disable all input on ActivityRecord during untrusted animation

For cross-process embedding, there can be activity of other app embedded
in untrusted mode. When it happens, we need to disable all input on the
Task if we are going to play client-driven animation to make sure the
host client can't abuse the animation leash.

Bug: 197364677
Test: atest WmTests:AppTransitionControllerTest
Change-Id: I3e299c0a43ac823b7df6af9d02c7168bd65d3271