cluster: do not need to check TiFlash http_port

[Lloyd-Pottiger]

What problem does this PR solve?

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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[Lloyd-Pottiger]

/cc @breezewish @JaySon-Huang

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-19 07:24:55.591226202 +0000 UTC m=+597917.582167672: ☑️ agreed by breezewish.

[ti-chi-bot]

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[Lloyd-Pottiger]

/assign @xhebox