Set opaque to false always when applyBlur() when shade blur flag is on

isAnyFullyExpanded is a reliable signal for whether the shade is fullscreen or not. Regardless, we don't need this signal once blur is on by default since opaque should always be false.

Flag: com.android.systemui.notification_shade_blur
Flag: com.android.systemui.bouncer_ui_revamp
Test: pressure test pulling the shade down and up
Fixes: 413143279
Fixes: 417555127
Change-Id: Iefeeeb3e97ec13675d9f6a81d4df78d5ea2c8ac5