fix(node): correct conditional checks in list filter node

- Added check for variable value before type checking in ListFilterNode to prevent unnecessary errors.
- Fixed incorrect workflow feature path in AppDslService to ensure correct data fetching.

api/core/workflow/nodes/list_filter/node.py

@@ -27,7 +27,7 @@ class ListFilterNode(BaseNode):
             return NodeRunResult(
                 status=WorkflowNodeExecutionStatus.FAILED, error=error_message, inputs=inputs, outputs=outputs
             )
-        if not isinstance(variable, ArrayFileSegment | ArrayNumberSegment | ArrayStringSegment):
+        if variable.value and not isinstance(variable, ArrayFileSegment | ArrayNumberSegment | ArrayStringSegment):
             error_message = (
                 f"Variable {node_data.variable} is not an ArrayFileSegment, ArrayNumberSegment " "or ArrayStringSegment"
             )

api/services/app_dsl_service.py

@@ -265,7 +265,7 @@ class AppDslService:
         draft_workflow = workflow_service.sync_draft_workflow(
             app_model=app,
             graph=workflow_data.get("graph", {}),
-            features=workflow_data.get("../core/app/features", {}),
+            features=workflow_data.get("features", {}),
             unique_hash=None,
             account=account,
             environment_variables=environment_variables,