Fix inability to remove or interact with folder when removing 2nd item from folder

Fix: 289960317
Test: Verify in unfolded felix that going from 2 icon folder and dragging 2nd icon out of folder lets you open the app that remains where the folder was
Test: Verify in unfolded felix that going from 2 icon folder and dragging 2nd icon into remove droptarget removes the folder and turns it into a single clickable icon
flag: no flag
Change-Id: I26138ee9f8e7cdb45cafe2446dc4d1e3d6d8347f
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 66c76ca..8105adb 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2175,6 +2175,8 @@
 
     /**
      * Returns the CellLayout of the specified container at the specified screen.
+     *
+     * @param screenId must be presenterPos and not modelPos.
      */
     public CellLayout getCellLayout(int container, int screenId) {
         return (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT)