fix: defer saving new message util got response from openAI

src/chatgpt-api.ts

@@ -156,7 +156,8 @@ export class ChatGPTAPI {
       parentMessageId,
       text
     }
-    await this._upsertMessage(message)
+
+    const latestQuestion = message
 
     const { messages, maxTokens, numTokens } = await this._buildMessages(
       text,
@@ -287,7 +288,9 @@ export class ChatGPTAPI {
         }
       }
     ).then((message) => {
-      return this._upsertMessage(message).then(() => message)
+      return this._upsertMessage(latestQuestion).then(() =>
+        this._upsertMessage(message).then(() => message)
+      )
     })
 
     if (timeoutMs) {