feat: default remote config to first available option

Author: Aethersailor

src/views/home/SubTable.vue

@@ -33,7 +33,6 @@
                 <div class="col-8 col-md-10">
                   <label class="form-label" for="remote">远程配置</label>
                   <select class="form-select" id="remote" @change="selectRemoteConfig">
-                    <option value="">默认配置</option>
                     <option v-for="option in remoteConfigOptions" :key="option" :value="option.value">
                       {{ option.text }}
                     </option>
@@ -161,7 +160,7 @@ export default {
       },
       urls: [],
       target: 'clash',
-      remoteConfig: '',
+      remoteConfig: window.config.remoteConfigOptions?.[0]?.value || '',
     };
   },
   created() {