fix: include default values in parameter initialization

--bug=1060961 --user=刘瑞斌 【工具优化】在“启动参数”设置中保存默认值后，应用内调用时可直接使用预设的默认参数，无需在工具中每次单独设置，简化操作流程。 https://www.tapd.cn/62980211/s/1764217

Author: liuruibin

apps/application/flow/step_node/tool_lib_node/impl/base_tool_lib_node.py

@@ -147,10 +147,11 @@ def execute(self, tool_lib_id, input_field_list, **kwargs) -> NodeResult:
 
         self.context['params'] = params
         # 合并初始化参数
+        init_params_default_value = {i["field"]: i.get('default_value') for i in tool_lib.init_field_list}
         if tool_lib.init_params is not None:
-            all_params = json.loads(rsa_long_decrypt(tool_lib.init_params)) | params
+            all_params = init_params_default_value | json.loads(rsa_long_decrypt(tool_lib.init_params)) | params
         else:
-            all_params = params
+            all_params = init_params_default_value | params
         result = function_executor.exec_code(tool_lib.code, all_params)
         return NodeResult({'result': result}, {}, _write_context=write_context)