fix: visual board query attr repeat

@@ -96,7 +96,11 @@ export function useSocketConnect(dataSourceRef: Ref<DataBoardLayoutInfo[]>) {
     const messageList: SocketMessageItem[] = [];
     let cmdId = 0;
     groupMapping.forEach((value, key) => {
-      const message = generateMessage(key, cmdId, value.map((item) => item.attribute).join(','));
+      const message = generateMessage(
+        key,
+        cmdId,
+        Array.from(new Set(value.map((item) => item.attribute))).join(',')
+      );
       messageList.push(message);
       setCmdId(cmdId, value);
       cmdId++;