[BetaTest] When `/commit` fails for some reason, it should roll back to the previous corresponding step instead of ending directly.

[kagami-l]

commit 工作流在提交失败的时候，可不可以只退回到编辑 commit message 的阶段，因为 commit hook 可能会报一些格式上的问题，需要重新调整一下格式。现在只能完全重新生成，有点废 token

When /commit fails for some reason, such as the message format does not meet the requirements, it should roll back to the step of editing the message, rather than ending the workflow directly.