Enlarge preview handle-bar size on inspector window

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Resources/Styles/MaterialGraph.uss

     cursor: resize-horizontal;
     background-color: rgba(0, 0, 0, 0);
     position-type: absolute;
-    width: 5;
+    width: 10;
     position-right: 0;
     position-top: 0;
     position-bottom: 0;
     cursor: resize-horizontal;
     background-color: rgba(0, 0, 0, 0);
     position-type: absolute;
-    width: 5;
+    width: 10;
     position-left: 0;
     position-top: 0;
     position-bottom: 0;
     cursor: resize-vertical;
     background-color: rgba(0, 0, 0, 0);
     position-type: absolute;
-    height: 5;
+    height: 10;
     position-left: 0;
     position-right: 0;
     position-top: 0;
     cursor: resize-vertical;
     background-color: rgba(0, 0, 0, 0);
     position-type: absolute;
-    height: 5;
+    height: 10;
     position-left: 0;
     position-right: 0;
     position-bottom: 0;