feat: change cursor when drag

libs/components/editor-plugins/src/menu/left-menu/LeftMenuDraggable.tsx

@@ -133,6 +133,7 @@ export const LeftMenuDraggable: FC<LeftMenuProps> = props => {
         );
 
         const onDragStart = async (event: React.DragEvent<Element>) => {
+            editor.dragDropManager.isOnDrag = true;
             if (block == null) return;
             const dragImage = await editor.blockHelper.getBlockDragImg(
                 block.blockId

libs/components/editor-plugins/src/menu/left-menu/LeftMenuPlugin.tsx

@@ -55,8 +55,8 @@ export class LeftMenuPlugin extends BasePlugin {
         blockInfo: BlockDomInfo
     ) => {
         const { type, dom, blockId } = blockInfo;
+        event.preventDefault();
         if (this.editor.dragDropManager.isDragBlock(event)) {
-            event.preventDefault();
             if (ignoreBlockTypes.includes(type)) {
                 return;
             }