fix(grid): col drag (#1478)

Co-authored-by: sealday <sealday@gmail.com>
Reviewed-on: daoyoucloud/tachybase#1478
Reviewed-by: sealday <zhanglin@daoyoucloud.com>
Co-authored-by: bai.zixv <bai.zixv@foxmail.com>
Co-committed-by: bai.zixv <bai.zixv@foxmail.com>

packages/core/client/src/schema-component/antd/grid/Grid.tsx

@@ -78,7 +78,7 @@ const ColDivider = (props) => {
 
   useDndMonitor({
     onDragStart(event) {
-      if (!isDragging) {
+      if (event.active.data.current.dividerRef?.current !== dividerRef.current) {
         return;
       }
       dragIdRef.current = event.active.id as string;