Merge "Fix IME container surface parent for dual-display-area"

services/core/java/com/android/server/wm/DisplayContent.java

...ices/core/java/com/android/server/wm/RootDisplayArea.java

...com/android/server/wm/DualDisplayAreaGroupPolicyTest.java

...android/server/wm/InputMethodDialogWindowContextTest.java

...droid/server/wm/WindowContextListenerControllerTests.java