refactor: Refactors workflow node execution handling (#18382)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/core/plugin/backwards_invocation/node.py

@@ -39,6 +39,7 @@ class PluginNodeBackwardsInvocation(BaseBackwardsInvocation):
         :param query: str
         :return: dict
         """
+        # FIXME(-LAN-): Avoid import service into core
         workflow_service = WorkflowService()
         node_id = "1919810"
         node_data = ParameterExtractorNodeData(
@@ -89,6 +90,7 @@ class PluginNodeBackwardsInvocation(BaseBackwardsInvocation):
         :param query: str
         :return: dict
         """
+        # FIXME(-LAN-): Avoid import service into core
         workflow_service = WorkflowService()
         node_id = "1919810"
         node_data = QuestionClassifierNodeData(

api/core/repository/workflow_node_execution_repository.py

@@ -86,3 +86,12 @@ class WorkflowNodeExecutionRepository(Protocol):
             execution: The WorkflowNodeExecution instance to update
         """
         ...
+
+    def clear(self) -> None:
+        """
+        Clear all WorkflowNodeExecution records based on implementation-specific criteria.
+
+        This method is intended to be used for bulk deletion operations, such as removing
+        all records associated with a specific app_id and tenant_id in multi-tenant implementations.
+        """
+        ...