修复了专注错误

Updated logic in heartFC_chat.py and relationship_manager.py to prioritize 'chat_info_platform', then 'user_platform', and finally a default when determining platform information. Added a fallback to 'unknown' in get_person_id if platform is None, improving robustness when platform data is missing.

Co-Authored-By: tt-P607 <68868379+tt-P607@users.noreply.github.com>

src/person_info/person_info.py

@@ -87,6 +87,10 @@ class PersonInfoManager:
     @staticmethod
     def get_person_id(platform: str, user_id: Union[int, str]) -> str:
         """获取唯一id"""
+        # 检查platform是否为None或空
+        if platform is None:
+            platform = "unknown"
+        
         if "-" in platform:
             platform = platform.split("-")[1]