fix(llm/nodes.py): Ensure that the output returns without any exceptions (#14880)

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

                     # deduct quota
                     self.deduct_llm_quota(tenant_id=self.tenant_id, model_instance=model_instance, usage=usage)
                     break
+            outputs = {"text": result_text, "usage": jsonable_encoder(usage), "finish_reason": finish_reason}
+
+            yield RunCompletedEvent(
+                run_result=NodeRunResult(
+                    status=WorkflowNodeExecutionStatus.SUCCEEDED,
+                    inputs=node_inputs,
+                    process_data=process_data,
+                    outputs=outputs,
+                    metadata={
+                        NodeRunMetadataKey.TOTAL_TOKENS: usage.total_tokens,
+                        NodeRunMetadataKey.TOTAL_PRICE: usage.total_price,
+                        NodeRunMetadataKey.CURRENCY: usage.currency,
+                    },
+                    llm_usage=usage,
+                )
+            )
         except LLMNodeError as e:
             yield RunCompletedEvent(
                 run_result=NodeRunResult(
                 )
             )
 
-        outputs = {"text": result_text, "usage": jsonable_encoder(usage), "finish_reason": finish_reason}
-
-        yield RunCompletedEvent(
-            run_result=NodeRunResult(
-                status=WorkflowNodeExecutionStatus.SUCCEEDED,
-                inputs=node_inputs,
-                process_data=process_data,
-                outputs=outputs,
-                metadata={
-                    NodeRunMetadataKey.TOTAL_TOKENS: usage.total_tokens,
-                    NodeRunMetadataKey.TOTAL_PRICE: usage.total_price,
-                    NodeRunMetadataKey.CURRENCY: usage.currency,
-                },
-                llm_usage=usage,
-            )
-        )
-
     def _invoke_llm(
         self,
         node_data_model: ModelConfig,