Cherry pick- fix-snapshot-read-bug[txn is stale: timestamp is too small] (#17271)

[triump2020]

1. fix snapshot read bug : parttion state's start ts not be updated correctly in some cornner case.

Approved by: @XuPeng-SH

What type of PR is this?

• [ ] API-change
• [x ] BUG
• [ ] Improvement
• [ ] Documentation
• [ ] Feature
• [ ] Test and CI
• [ ] Code Refactoring

Which issue(s) this PR fixes:

issue #17269

What this PR does / why we need it:

1. Fix snapshot read bug: partition state's start not be updated correctly in some corner case.