Implementing new ActivityEmbeddingComponent APIs

Implementing ActivityEmbeddingComponent#setLaunchingActivityStack

Also increase vendor API level to 3.

Bug: 229680885
Test: verified activity launched on primary TaskFragment
Change-Id: I492c4d90a7d0182d2310a7916517890072b28278

libs/WindowManager/Jetpack/src/androidx/window/extensions/WindowExtensionsImpl.java

@@ -48,7 +48,7 @@ public class WindowExtensionsImpl implements WindowExtensions {
     // TODO(b/241126279) Introduce constants to better version functionality
     @Override
     public int getVendorApiLevel() {
-        return 2;
+        return 3;
     }
 
     @NonNull

libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitController.java

@@ -230,6 +230,14 @@ public class SplitController implements JetpackTaskFragmentOrganizer.TaskFragmen
         return mSplitAttributesCalculator;
     }
 
+    @Override
+    @NonNull
+    public ActivityOptions setLaunchingActivityStack(@NonNull ActivityOptions options,
+            @NonNull IBinder token) {
+        options.setLaunchTaskFragmentToken(token);
+        return options;
+    }
+
     @NonNull
     @GuardedBy("mLock")
     @VisibleForTesting
@@ -2064,6 +2072,7 @@ public class SplitController implements JetpackTaskFragmentOrganizer.TaskFragmen
                     transactionRecord.apply(false /* shouldApplyIndependently */);
                     // Amend the request to let the WM know that the activity should be placed in
                     // the dedicated container.
+                    // TODO(b/229680885): skip override launching TaskFragment token by split-rule
                     options.putBinder(ActivityOptions.KEY_LAUNCH_TASK_FRAGMENT_TOKEN,
                             launchedInTaskFragment.getTaskFragmentToken());
                     mCurrentIntent = intent;