Use AplicationContext for getWindowCornerRadius on DEFAULT_DISPLAY

- ag/32861507 changed getWindowCornerRadius to use DisplayContext, which does not get updated on configuartion changes, this caused potentially regression of having wrong corner radius after configuration changes
- ag/32896744  attempted to fix this with window context, get is rolled back due to perfroamcne regression
- This CL is a temp fix to make DEFAULT_DISPLAY continue usign AplicationContext for getWindowCornerRadius, if the AplicationContext is associated to a display, and otherwise fallback to displayContext

Bug: 408988616
Test: manual
Flag: EXEMPT bug fix
Change-Id: I72dbcfb7cd6cdc6783e96768b4f4b51b76d9a245

quickstep/src/com/android/quickstep/RotationTouchHelper.java

@@ -149,8 +149,13 @@ public class RotationTouchHelper implements DisplayInfoChangeListener {
         mSystemUiProxy = systemUiProxy;
 
         Resources resources = mApplicationContext.getResources();
+        // TODO(b/408988616): Find a better solution for external display to have resources updated
+        // after configuration changes.
+        Context displayAssociatedContext =
+                mApplicationContext.getAssociatedDisplayId() == mDisplayId
+                        ? mApplicationContext : displayContext;
         mOrientationTouchTransformer = new OrientationTouchTransformer(resources, mMode,
-                () -> QuickStepContract.getWindowCornerRadius(displayContext));
+                () -> QuickStepContract.getWindowCornerRadius(displayAssociatedContext));
 
         // Register for navigation mode and rotation changes
         mDisplayController.addChangeListenerForDisplay(this, mDisplayId);