[Bug] [数据同步] 在未保存数据同步任务的情况下启动任务会发生空指针异常
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- Java
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Description
### Search before asking
- [X] I had searched in the [issues](https://github.com/DTStack/chunjun/issues) and found no similar issues.
### What happened
在未保存数据同步任务的情况下启动任务会发生空指针异常
### What you expected to happen
修复bug
### How to reproduce
任务--->新建任务--->数据同步--->设置好，不保存，而是直接启动
### Anything else
_No response_
### Version
master
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
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Assessment
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