client-go: fetch the store min resolved_ts by pd api firstly

[HuSharp]

What problem does this PR solve?

Issue Number: close #43386

Problem Summary:

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Defined2014
• JmPotato

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[ti-chi-bot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[HuSharp]

@Defined2014 PTAL, thx!

[Defined2014]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: d1010aa

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #43752.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #43753.