puller: fix retry logic when check store version failed (#11903)

[ti-chi-bot]

This is an automated cherry-pick of #11903

What problem does this PR solve?

Issue Number: close #11766

What is changed and how it works?

Change the retry logic to reload region when client.GetStore failed.

Check List

Tests

• Unit test

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

Fix the problem that changefeed may get stuck after scaling out new tikv nodes.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lidezhu

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [lidezhu]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[codecov]

Codecov Report

Attention: Patch coverage is 67.56757% with 12 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.5@201a10d). Learn more about missing BASE report.

Additional details and impacted files

Components	Coverage Δ
cdc	59.6629% <0.0000%> (?)
dm	50.0924% <0.0000%> (?)
engine	53.2336% <0.0000%> (?)

Flag	Coverage Δ
unit	55.1891% <67.5675%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

@@               Coverage Diff                @@
##             release-8.5     #11932   +/-   ##
================================================
  Coverage               ?   55.1891%           
================================================
  Files                  ?       1002           
  Lines                  ?     136592           
  Branches               ?          0           
================================================
  Hits                   ?      75384           
  Misses                 ?      55700           
  Partials               ?       5508           

[lidezhu]

/test cdc-integration-mysql-test

[lidezhu]

/retest