statistics: Add 'store' label to metric pd_cluster_status.

[SerjKol80]

What problem does this PR solve?

Issue Number: Close #9855

What is changed and how does it work?

Add 'store' label to metric pd_cluster_status.

Check List

Tests

• Unit test

Code changes

• Metrics only

Side effects

• metric pd_cluster_status now needs to be aggregated in metic system across all stores if you need value across whole cluster.

Related changes N/A

Release note

metric "pd_cluster_status" now has additional label "store" containing ID of the store.

[ti-chi-bot[bot]]

Hi @SerjKol80. Thanks for your PR.

I'm waiting for a tikv member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[rleungx]

/ok-to-test

[SerjKol80]

@lhy1024 Thank you. Would you initiate the merge. It looks like I don't have permission.

[lhy1024]

@bufferflies PTAL

[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2025-11-05 07:29:51.714334856 +0000 UTC m=+255241.157364725: :ballot_box_with_check: agreed by lhy1024.
• 2025-11-11 23:30:21.105077587 +0000 UTC m=+831270.548107466: :ballot_box_with_check: agreed by Tema.

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bufferflies, lhy1024, Tema

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

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• ~~OWNERS~~ [bufferflies,lhy1024]

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

[Tema]

@lhy1024 @bufferflies could you please approve 4 pending workflows to run ^

[SerjKol80]

/retest

[codecov[bot]]

Codecov Report

:x: Patch coverage is 95.91837% with 2 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 78.68%. Comparing base (75bdf39) to head (fc8d6df). :warning: Report is 43 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9898      +/-   ##
==========================================
+ Coverage   78.58%   78.68%   +0.10%     
==========================================
  Files         494      495       +1     
  Lines       66411    66457      +46     
==========================================
+ Hits        52187    52294     +107     
+ Misses      10440    10379      -61     
  Partials     3784     3784              

Flag	Coverage Δ
unittests	78.68% <95.91%> (+0.10%)	:arrow_up:

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[SerjKol80]

/retest

[lhy1024]

/test pull-unit-test-next-gen

[SerjKol80]

/retest

[SerjKol80]

/retest

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #10055. But this PR has conflicts, please resolve them!