Set the linear layout direction based on initial config

Bug: 230077443
Test: - enable feature on phone
      - drag a notification from the shade
      => observe that the drop zones match current orientation
      - repeat in opposite orientation
      - repeat on tablet
Change-Id: I90fbb09d36bda7b66563dc4b4ac8fe1ec9d0cb31

libs/WindowManager/Shell/src/com/android/wm/shell/draganddrop/DragLayout.java

@@ -105,6 +105,10 @@ public class DragLayout extends LinearLayout {
                 MATCH_PARENT));
         ((LayoutParams) mDropZoneView1.getLayoutParams()).weight = 1;
         ((LayoutParams) mDropZoneView2.getLayoutParams()).weight = 1;
+        int orientation = getResources().getConfiguration().orientation;
+        setOrientation(orientation == Configuration.ORIENTATION_LANDSCAPE
+                ? LinearLayout.HORIZONTAL
+                : LinearLayout.VERTICAL);
         updateContainerMargins(getResources().getConfiguration().orientation);
     }