fix: 修复错误的空值检测逻辑

src/plugins/chat/emoji_manager.py

@@ -241,8 +241,9 @@ class EmojiManager:
                         logger.info(f"其不满足过滤规则，被剔除 {check}")
                         continue
                     logger.info(f"check通过 {check}")
-                embedding = await get_embedding(discription)
+                
                 if discription is not None:
+                    embedding = await get_embedding(discription)
                     # 准备数据库记录
                     emoji_record = {
                         'filename': filename,