Merge "Cache Display.Mode so we can ignore refresh rate changes" into rvc-d1-dev am: b2641d1d13 am: bf3278ca76 am: 46a7a4da02

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12063358

Change-Id: I58686005104a9a343819bee61c0e2c9e234fa202