feat: Add duplicate name judgment and null value judgment

调整部分样式，并给下载器、媒体服务器、自定义规则、优先级规则组，名称与ID增加重名警告和空值警告，

src/views/setting/AccountSettingSystem.vue

@@ -220,6 +220,7 @@ onDeactivated(() => {
             <template #item="{ element }">
               <DownloaderCard
                 :downloader="element"
+                :downloaders="downloaders"
                 @close="removeDownloader(element)"
                 @change="onDownloaderChange"
                 :allow-refresh="isRequest"
@@ -268,6 +269,7 @@ onDeactivated(() => {
             <template #item="{ element }">
               <MediaServerCard
                 :mediaserver="element"
+                :mediaservers="mediaServers"
                 @close="removeMediaServer(element)"
                 @change="onMediaServerChange"
               />