Clearing PRIORITY_FLICKER_RR votes on low power mode on

Bug: b/295161184, b/322914203
Test: atest DisplayModeDirectorTest
Change-Id: Iefe8493c01cb1262509530a4da616f4a15fe18b4
Merged-In: Iefe8493c01cb1262509530a4da616f4a15fe18b4
(cherry picked from commit 605ea878ed1f086c2ea899ff91a7f321b1c5a020)
3 files changed