优化文件路径检查逻辑，修正路径引用方式以确保文件存在性验证

func/Module_SA_label_v2.py

@@ -309,7 +309,7 @@ class Data:
                            "Input_SA_Label", "Input_Stage"]
 
         for file_key in check_file_list:
-            if (not self.config["Path"][file_key].is_file()) or (not self.config["Path"][file_key].exists()):
+            if (not Path(self.config["Path"][file_key]).is_file()) or (not Path(self.config["Path"][file_key]).exists()):
                 return Result().failure(info=Constants.INPUT_FAILURE + "\n" +
                                              str(self.config["Path"][file_key]) + file_key +
                                              Constants.FAILURE_REASON["Path_Not_Exist"])