Temporary fix DialogLaunchAnimatorTest#testShowDialogFromView

This is a temporary fix to make #testShowDialogFromView pass on
git_master/cf_x86_64_phone-userdebug.

Bug: 204589809
Bug: 204561691
Test: https://android-build.googleplex.com/builds/abtd/run/L96200000951897805
Change-Id: I28fe649fde6a107ee939ae8e85090972899f5d17