tici: fix monitoring port

[JinheLin]

What problem does this PR solve?

close #xxx

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release notes:

NONE

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (feature/fts@e969d49). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
pkg/cluster/spec/monitoring.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             feature/fts    #2708   +/-   ##
==============================================
  Coverage               ?   46.90%           
==============================================
  Files                  ?      372           
  Lines                  ?    38104           
  Branches               ?        0           
==============================================
  Hits                   ?    17870           
  Misses                 ?    18088           
  Partials               ?     2146           

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2026-05-14 07:45:14.085088179 +0000 UTC m=+338082.617867508: ☑️ agreed by xhebox.