fix: add missing Tabs/TabItem imports in GeneralSpacestation.mdx

Docusaurus 3.1.1 requires explicit imports for @theme/Tabs and
@theme/TabItem in MDX files — they are not globally available.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: JusterZhu

website/docs/doc/GeneralSpacestation.mdx

@@ -2,6 +2,9 @@
 sidebar_position: 1
 ---
 
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
 <iframe
   src="//player.bilibili.com/player.html?bvid=BV12P9dBiEEh&page=1"
   width="100%"

website/i18n/en/docusaurus-plugin-content-docs/current/doc/GeneralSpacestation.mdx

@@ -2,6 +2,9 @@
 sidebar_position: 1
 ---
 
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
 <iframe
   src="//player.bilibili.com/player.html?bvid=BV12P9dBiEEh&page=1"
   width="100%"

website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/doc/GeneralSpacestation.mdx

@@ -2,6 +2,9 @@
 sidebar_position: 1
 ---
 
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
 <iframe
   src="//player.bilibili.com/player.html?bvid=BV12P9dBiEEh&page=1"
   width="100%"