Unified API response json schema (#3170)

### What problem does this PR solve?

Unified API response json schema

### Type of change

- [x] Refactoring

web/src/pages/flow/chat/hooks.ts

@@ -151,7 +151,7 @@ export const useSendMessage = (
       const res = await send(params);
 
       if (receiveMessageError(res)) {
-        antMessage.error(res?.data?.retmsg);
+        antMessage.error(res?.data?.message);
 
         // cancel loading
         setValue(message.content);
@@ -227,7 +227,7 @@ export const useSendNextMessage = () => {
       const res = await send(params);
 
       if (receiveMessageError(res)) {
-        antMessage.error(res?.data?.retmsg);
+        antMessage.error(res?.data?.message);
 
         // cancel loading
         setValue(message.content);

web/src/pages/flow/hooks.ts

@@ -497,15 +497,15 @@ export const useSaveGraphBeforeOpeningDebugDrawer = (show: () => void) => {
   const { send } = useSendMessageWithSse(api.runCanvas);
   const handleRun = useCallback(async () => {
     const saveRet = await saveGraph();
-    if (saveRet?.retcode === 0) {
+    if (saveRet?.code === 0) {
       // Call the reset api before opening the run drawer each time
       const resetRet = await resetFlow();
       // After resetting, all previous messages will be cleared.
-      if (resetRet?.retcode === 0) {
+      if (resetRet?.code === 0) {
         // fetch prologue
         const sendRet = await send({ id });
         if (receiveMessageError(sendRet)) {
-          message.error(sendRet?.data?.retmsg);
+          message.error(sendRet?.data?.message);
         } else {
           refetch();
           show();

web/src/pages/flow/list/hooks.ts

@@ -53,7 +53,7 @@ export const useSaveFlow = () => {
         // },
       });
 
-      if (ret?.retcode === 0) {
+      if (ret?.code === 0) {
         hideFlowSettingModal();
         navigate(`/flow/${ret.data.id}`);
       }

web/src/pages/flow/utils.ts

@@ -144,7 +144,7 @@ export const buildDslComponentsByGraph = (
 };
 
 export const receiveMessageError = (res: any) =>
-  res && (res?.response.status !== 200 || res?.data?.retcode !== 0);
+  res && (res?.response.status !== 200 || res?.data?.code !== 0);
 
 // Replace the id in the object with text
 export const replaceIdWithText = (