Separate refresh rate restrictions for different High Brightness Modes

Allow setting a different refresh rate for High Brightness Mode for HDR
and for Sunlight.

Bug: 196691596
Test: atest DisplayModeDirectorTest
Test: Manual:
      1. Ensure HBM for HDR takes presedence over HBM for Sunlight
      2. Ensure app refresh rate votes override bothHBM for Sunlight
Change-Id: I4a29c47f218046d0852178ad5dc7484a86ef8607