feat(handsontable): 缩小序号列的宽度

handsontable/src/css/handsontable.css

@@ -193,7 +193,7 @@
   cursor: row-resize;
   z-index: 110;
   height: 5px;
-  width: 50px;
+  width: 40px;
 }
 
 .handsontable .manualColumnResizer:hover,