Support launching an intent and a task from the same app as multi-instance

Similar to ag/16820166, add FLAG_ACTIVITY_MULTIPLE_TASK to the fillInIntent

Fixes: 222583964
Fixes: 217965464
Fixes: 221415250
Test: https://recall.googleplex.com/projects/f46cfe9c-8076-4efe-bf8a-b1cc4f1f5e1b/sessions/7606236a-3350-49d6-bfad-9e6a609413d1
Change-Id: I676358ef1cbff8317995430de961a0a3242c0cbf

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

@@ -295,8 +295,8 @@ public abstract class BaseQuickstepLauncher extends Launcher {
         mActionsView = findViewById(R.id.overview_actions_view);
         RecentsView overviewPanel = (RecentsView) getOverviewPanel();
         SplitSelectStateController controller =
-                new SplitSelectStateController(mHandler, SystemUiProxy.INSTANCE.get(this),
-                        getStateManager(), getDepthController());
+                new SplitSelectStateController(this, mHandler, getStateManager(),
+                        getDepthController());
         overviewPanel.init(mActionsView, controller);
         mActionsView.setDp(getDeviceProfile());
         mActionsView.updateVerticalMargin(DisplayController.getNavigationMode(this));