fix: add requestId to chat for QModelResponse errors (aws#1284)

Author: tsmithsz

server/aws-lsp-codewhisperer/src/language-server/agenticChat/agenticChatController.ts

@@ -1607,17 +1607,20 @@ export class AgenticChatController implements ChatHandlers {
                 // Clear the chat history in the database for this tab
                 this.#chatHistoryDb.clearTab(tabId)
             }
+
+            const errorBody =
+                err.code === 'QModelResponse' && requestID ? `${err.message}\n\nRequest ID: ${requestID}` : err.message
             return new ResponseError<ChatResult>(LSPErrorCodes.RequestFailed, err.message, {
                 type: 'answer',
-                body: err.message,
+                body: errorBody,
                 messageId: errorMessageId,
                 buttons: [],
             })
         }
         this.#features.logging.error(`Unknown Error: ${loggingUtils.formatErr(err)}`)
         return new ResponseError<ChatResult>(LSPErrorCodes.RequestFailed, err.message, {
             type: 'answer',
-            body: requestID ? genericErrorMsg + `\n\nRequest ID: ${requestID}` : genericErrorMsg,
+            body: requestID ? `${genericErrorMsg}\n\nRequest ID: ${requestID}` : genericErrorMsg,
             messageId: errorMessageId,
             buttons: [],
         })