Set Shade opaqueness on devices that don't support blurs

This CL makes sure that we still set the shade opaqueness even for
devices that don't support blurs. This noticeably improves the dialog
launch animation, and will probably improve performance overall.

Bug: 202936526
Test: Manual
Change-Id: I4517906cbef3f06bfb2f7419afea0fd18a1c1688
2 files changed