Don't applyReady immediately if WCT is launching activity

In this case, we need to wait for the activity lifecycle
callbacks or else we just immediately make a no-op. This
is a temporary fix until we address readiness properly.

Bug: 294624260
Test: start transition w/ launchtask (eg. with fullscreen app,
      go to recents, start entering split w/ that app, "cancel"
      split by tapping app preview to launch it in fullscreen).
Change-Id: If0852d184fe440f52f91b489a786201f86e41d59

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

@@ -309,6 +309,14 @@ class WindowOrganizerController extends IWindowOrganizerController.Stub
                                 applyTransaction(wct, -1 /* syncId */, nextTransition, caller,
                                         deferred);
                                 if (needsSetReady) {
+                                    // TODO(b/294925498): Remove this once we have accurate ready
+                                    //                    tracking.
+                                    if (hasActivityLaunch(wct) && !mService.mRootWindowContainer
+                                            .allPausedActivitiesComplete()) {
+                                        // WCT is launching an activity, so we need to wait for its
+                                        // lifecycle events.
+                                        return;
+                                    }
                                     nextTransition.setAllReady();
                                 }
                             });
@@ -344,6 +352,15 @@ class WindowOrganizerController extends IWindowOrganizerController.Stub
         }
     }
 
+    private static boolean hasActivityLaunch(WindowContainerTransaction wct) {
+        for (int i = 0; i < wct.getHierarchyOps().size(); ++i) {
+            if (wct.getHierarchyOps().get(i).getType() == HIERARCHY_OP_TYPE_LAUNCH_TASK) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     @Override
     public int startLegacyTransition(int type, @NonNull RemoteAnimationAdapter adapter,
             @NonNull IWindowContainerTransactionCallback callback,