Dismiss split selection for workspace long-press

Bug: 295426148
Test: Enter split contextual from homescreen,
long-press on empty space, split gets dismissed
Flag: ENABLE_SPLIT_WORKSPACE_TO_WORKSPACE

Change-Id: I3a893bea7b22645fe60c65c4c5ab8c2087d769da
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index b34a527..d39bc1c 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -3108,6 +3108,11 @@
         return false;
     }
 
+    /** Call to dismiss the intermediary split selection state. */
+    public void dismissSplitSelection() {
+        // Overridden; move this into ActivityContext if necessary for Taskbar
+    }
+
     @Override
     public void returnToHomescreen() {
         super.returnToHomescreen();