Calculate the launch bounds after layout

This fixes the issue where the surface is cropped incorrectly after
launching a bubble from the overflow (after changing rotation).

Bug: 278653202
Test: manual - have some bubbles in the overflow
             - expand a bubble, navigate to overflow, add a bubble
             => observe that the surface isn't cropped incorrectly
Change-Id: Id54ed0ccf724ec05aef8cb3a9bbbb5ef5ed28d28

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleExpandedView.java

@@ -214,9 +214,6 @@ public class BubbleExpandedView extends LinearLayout {
             ActivityOptions options = ActivityOptions.makeCustomAnimation(getContext(),
                     0 /* enterResId */, 0 /* exitResId */);
 
-            Rect launchBounds = new Rect();
-            mTaskView.getBoundsOnScreen(launchBounds);
-
             // TODO: I notice inconsistencies in lifecycle
             // Post to keep the lifecycle normal
             post(() -> {
@@ -225,6 +222,9 @@ public class BubbleExpandedView extends LinearLayout {
                             + getBubbleKey());
                 }
                 try {
+                    Rect launchBounds = new Rect();
+                    mTaskView.getBoundsOnScreen(launchBounds);
+
                     options.setTaskAlwaysOnTop(true);
                     options.setLaunchedFromBubble(true);
                     options.setPendingIntentBackgroundActivityStartMode(