Set aria-hidden on div in ResizeHandle (Comcast#3834)

Co-authored-by: Aman Mahajan <amahajan@stratag.com>

Author: maniekpl00

src/HeaderCell.tsx

@@ -370,6 +370,7 @@ function ResizeHandle<R, SR>({
 
   return (
     <div
+      aria-hidden
       className={resizeHandleClassname}
       onClick={stopPropagation}
       onPointerDown={onPointerDown}