fix: workflow tool closes stream writer correctly (#1839)

backend/internal/mock/domain/workflow/interface.go

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 // Code generated by MockGen. DO NOT EDIT.
 // Source: interface.go
 //
@@ -484,12 +500,13 @@ func (mr *MockServiceMockRecorder) WithExecuteConfig(cfg any) *gomock.Call {
 }
 
 // WithMessagePipe mocks base method.
-func (m *MockService) WithMessagePipe() (compose.Option, *schema.StreamReader[*entity.Message]) {
+func (m *MockService) WithMessagePipe() (compose.Option, *schema.StreamReader[*entity.Message], func()) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "WithMessagePipe")
 	ret0, _ := ret[0].(compose.Option)
 	ret1, _ := ret[1].(*schema.StreamReader[*entity.Message])
-	return ret0, ret1
+	ret2, _ := ret[2].(func())
+	return ret0, ret1, ret2
 }
 
 // WithMessagePipe indicates an expected call of WithMessagePipe.