fix: 修复hub连接

src/store/useWebFetcher.ts

@@ -208,11 +208,15 @@ export const useWebFetcher = defineStore('WebFetcher', () => {
     }
   }
 
+  let isConnectingSignalR = false;
   /**
    * 连接 SignalR 服务器
    */
   async function connectSignalR(): Promise<boolean> {
-    return await navigator.locks.request('webFetcherStartLock', async () => {
+    if (isConnectingSignalR) {
+      return false;
+    }
+    isConnectingSignalR = true;
     if (signalRClient.value && signalRClient.value.state !== signalR.HubConnectionState.Disconnected) {
       console.log(prefix.value + "SignalR 已连接或正在连接");
       return true;
@@ -297,8 +301,9 @@ export const useWebFetcher = defineStore('WebFetcher', () => {
       signalRClient.value = undefined;
       // state.value = 'disconnected'; // 保持 connecting 或由 Start 控制
       return false;
+    } finally {
+      isConnectingSignalR = false;
     }
-    });
   }
   async function sendSelfInfo(client: signalR.HubConnection) {
     return client.invoke('SetSelfInfo',