Add resume callback to animate back to appropriate depth.

This fixes the bug where depth gets stuck to 1 after opening a transluscent
activity.

Bug: 152950633
Change-Id: I8bf5f61c57ef79d41656865b1ff1fbadb298fc36

quickstep/src/com/android/launcher3/QuickstepAppTransitionManagerImpl.java

@@ -291,6 +291,15 @@ public abstract class QuickstepAppTransitionManagerImpl extends LauncherAppTrans
                     launcherContentAnimator.second.run();
                 }
             });
+        } else {
+            anim.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationStart(Animator animation) {
+                    mLauncher.addOnResumeCallback(() ->
+                            ObjectAnimator.ofFloat(mLauncher.getDepthController(), DEPTH,
+                            mLauncher.getStateManager().getState().getDepth(mLauncher)).start());
+                }
+            });
         }
     }