fix(plugin-map): map block repeats (#1582)

* fix: map block repeats

* feat: update logic

packages/plugins/map/src/client/block/index.tsx

@@ -18,12 +18,14 @@ export const MapBlockOptions: React.FC = (props) => {
   const schemaInitializer = useContext(SchemaInitializerContext);
 
   useEffect(() => {
+    if (!children.find((item) => item.component === 'MapBlockInitializer')) {
       children.push({
         key: 'mapBlock',
         type: 'item',
         title: generateNTemplate('Map'),
         component: 'MapBlockInitializer',
       });
+    }
   }, []);
 
   return (