Switch to Saturated color mode when Accessibility transforms are active

The Accessibility settings for color inversion and color correction are
incompatible with some color modes. When either of these settings is
toggled, switch to Saturated mode. When both settings are disabled,
revert back to the user's color mode preference.

Bug: 68856024
Test: runtest -c com.android.server.ColorDisplayServiceTest
frameworks-services
Change-Id: I497b893f5d0f4bb5dff23bb38cf20d9b6b587050