HighHint touch boost fix re. frame rate override

Fix HighHint touch boost regarding frame rate override. The
touch boost logic in getFrameRateOverrides should mirror frame rate
selection in getRankedFrameRates. We decided earlier that HighHint is
only ignored when there are ExplicitDefault compatibility votes.

Bug: 326666127
Test: atest libsurfaceflinger_unittest
Test: jank test cases + manual
Change-Id: I54ac61f2a174b9a4dea7d67d8b196217b4f60921