Add drop target button overlap correction to second button only.

Bug: 228311837
Bug: 228311837
Test: manual.
Change-Id: Ib9256deadd58c7350143221bf98c79415aaf9bc4
diff --git a/src/com/android/launcher3/DropTargetBar.java b/src/com/android/launcher3/DropTargetBar.java
index b94cdbf..54f769b 100644
--- a/src/com/android/launcher3/DropTargetBar.java
+++ b/src/com/android/launcher3/DropTargetBar.java
@@ -252,8 +252,7 @@
                 int overlap = start + leftButton.getMeasuredWidth() + rightButton.getMeasuredWidth()
                         - end;
                 if (overlap > 0) {
-                    start -= overlap / 2;
-                    end += overlap / 2;
+                    end += overlap;
                 }
 
                 leftButton.layout(start, 0, start + leftButton.getMeasuredWidth(),