Request display change transition when canHostTasks changes

Bug: 394742487
Test: atest DeferredDisplayUpdaterDiffTest
Test: manaually (start mirroring and verify the transition by checking
logcat)
Flag: com.android.server.display.feature.flags.enable_display_content_mode_management

Change-Id: I30f86b3c981cd967ce4c08ca396c69cb9edabf4b