*: fix follower cannot handle member request

[rleungx]

What problem does this PR solve?

Issue Number: Ref #7519

What is changed and how does it work?

Check List

Tests

• Manual test

Use tiup to deploy a cluster and execute select * from cluster_info; with 3 PD.

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• lhy1024
• nolouch

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[codecov]

Codecov Report

Merging #8122 (79f7439) into master (5cdf252) will decrease coverage by 0.06%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

❗ Current head 79f7439 differs from pull request most recent head 2fbebca. Consider uploading reports for the commit 2fbebca to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8122      +/-   ##
==========================================
- Coverage   77.29%   77.23%   -0.06%     
==========================================
  Files         470      470              
  Lines       61143    61142       -1     
==========================================
- Hits        47260    47224      -36     
- Misses      10320    10359      +39     
+ Partials     3563     3559       -4     

Flag	Coverage Δ
unittests	77.23% <ø> (-0.06%)	⬇️

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[HuSharp]

/merge

[ti-chi-bot]

@HuSharp: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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[ti-chi-bot]

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

Commit hash: 79f7439

[ti-chi-bot]

@rleungx: Your PR was out of date, I have automatically updated it for you.

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

@rleungx: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

If you have any questions about the PR merge process, please refer to pr process.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.