[Bug] CloudMode Stream load occasionally fails

### Search before asking

- [x] I had searched in the [issues](https://github.com/apache/doris/issues?q=is%3Aissue) and found no similar issues.

### Version

3.x, master

### What's Wrong?

Occasionally After flush of data - the file close is asynchronous. So immediately after, if the segment is accessed - it may so happen that the file close is not yet complete - leading to file not found error during segment loading

### What You Expected?

Retry segment open in case of not found error, make every effort to ensure that the task is normal.

### How to Reproduce?

_No response_

### Anything Else?

_No response_

### Are you willing to submit PR?

- [x] 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)