fix: add get_module_dbname to plugin for portal unified DB

plugins/cms_functions.py

@@ -81,11 +81,17 @@ async def get_latest_news(limit=3):
         return []
 
 
+def get_module_dbname(module_name):
+    """Portal 所有模块共用 ocai_cms 数据库"""
+    return 'ocai_cms'
+
+
 def load_cms():
     g = ServerEnv()
     g.get_site_config = get_site_config
     g.get_published_content = get_published_content
     g.get_latest_news = get_latest_news
+    g.get_module_dbname = get_module_dbname
 
 
 load_cms()