feat(provider): enable endpoint management for aggregator providers

Allow aggregator category providers (like AiHubMix) to access the endpoint
speed test and management features, previously limited to third-party and
custom providers only.

src/components/providers/forms/ProviderForm.tsx

@@ -336,9 +336,11 @@ export function ProviderForm({
     );
   }, [groupedPresets]);
 
-  // 判断是否显示端点测速（仅第三方和自定义类别）
+  // 判断是否显示端点测速（聚合服务、第三方和自定义类别）
   const shouldShowSpeedTest =
-    category === "third_party" || category === "custom";
+    category === "aggregator" ||
+    category === "third_party" ||
+    category === "custom";
 
   // 使用 API Key 链接 hook (Claude)
   const {