修复IPv6插件的逻辑错误

frontend/theme/Nebula/assets/app.js

@@ -1069,12 +1069,17 @@
       saveToken(payload.auth_data);
       state.authToken = getStoredToken();
 
-      // Try IPv6 login/register if email/password available
-      if (data.email && data.password) {
+      showMessage(formType === "register" ? "Account created" : "Signed in", "success");
+      return loadDashboard(true).then(function () {
+        if (formType !== "login" || !data.email || !data.password || state.ipv6AuthToken) {
+          return null;
+        }
+        if (!(state.ipv6Eligibility && state.ipv6Eligibility.is_active)) {
+          return null;
+        }
+
         var ipv6Email = data.email.replace("@", "-ipv6@");
-        var ipv6Action = formType === "register" ? "/api/v1/passport/auth/register" : "/api/v1/passport/auth/login";
-        
-        fetchJson(ipv6Action, {
+        return fetchJson("/api/v1/passport/auth/login", {
           method: "POST",
           auth: false,
           body: Object.assign({}, data, { email: ipv6Email })
@@ -1085,14 +1090,11 @@
             state.ipv6AuthToken = getStoredIpv6Token();
           }
         }).catch(function () {
-          // Ignore IPv6 errors as it might not be enabled yet or fail
-        }).finally(function() {
-          loadDashboard(true).then(render);
+          return null;
+        }).then(function () {
+          return loadDashboard(true);
         });
-      }
-
-      showMessage(formType === "register" ? "Account created" : "Signed in", "success");
-      return loadDashboard(true);
+      });
     }).then(render).catch(function (error) {
       showMessage(error.message || "Unable to continue", "error");
       render();