[DNM] Release-8.5-cse

[pingyu]

What problem does this PR solve?

Issue Number: close #xxx

What is changed and how it works?

Check List

Tests

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• Manual test (add detailed scripts or steps below)
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[ti-chi-bot[bot]]

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[gemini-code-assist[bot]]

Summary of Changes

Hello @pingyu, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request, currently marked as "Do Not Merge" and potentially related to a Release-8.5-cse branch, introduces a modification to the minimum allowed synchronization point interval. The change aims to provide greater flexibility in configuring data synchronization frequency by significantly reducing the lower bound for this setting.

Highlights

• Configuration Update: The minimum SyncPointInterval in pkg/config/replica_config.go has been significantly reduced from 30 seconds to 1 second, allowing for more frequent synchronization points.

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