fix: [Application] The form collection node of the loop body references session variables as parameters. After modifying the session variables at the end of the loop, the options for form collection are no longer displayed (#5055)

Author: shaohuzhang1

apps/application/flow/step_node/form_node/impl/base_form_node.py

@@ -6,6 +6,7 @@
     @date：2024/11/4 14:52
     @desc:
 """
+import copy
 import json
 import time
 from typing import Dict, List
@@ -76,6 +77,7 @@ def save_context(self, details, workflow_manage):
                 self.context[key] = form_data[key]
 
     def reset_field(self, field):
+        field = copy.copy(field)
         reset_field = ['field', 'label', 'default_value']
         for f in reset_field:
             _value = field[f]