Implement display compat mode

This change covers the main implementation of display compat mode.

- The config changes that should be ignored for activity relaunch
 check are determined in
 AppCompatDisplayCompatModePolicy#getDisplayCompatModeConfigMask()
 and applied in ActivityRecord#shouldRelaunchLocked().

- The current spec is to ignore DENSITY, TOUCHSCREEN, and
 COLOR_MODE for all games, but may be adjusted in the future.

- This also changes when restart handle menu gets shown.
 Previously, it was shown for all apps after they move between
 displays, but according to user feedback and testing data, it
 turns out to be a bit controvertial, so with this change,
 the restart menu is enabled only for apps in display compat mode.

Flag: com.android.window.flags.enable_display_compat_mode
Bug: 410958151
Test: AppCompatDisplayCompatTests

Change-Id: Ie74861230f206dc8d2c34333e1bcf501d3a2ae0e