Fix the incorrect value of the max thread size (#9881)

[ti-chi-bot]

This is an automated cherry-pick of #9881

What problem does this PR solve?

Issue Number: close #9880, ref #9745

Problem Summary:

See the issue. We make setAuto not static as a workaround. However, we have to handle the coupling of Proxy and Settings.h.

What is changed and how it works?

Check List

Tests

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

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

[ti-chi-bot]

@CalvinNeo This PR has conflicts, I have hold it.
Please resolve them or ask others to resolve them, then comment /unhold to remove the hold label.

[CalvinNeo]

/unhold

[CalvinNeo]

lgtm

[CalvinNeo]

/cc @JaySon-Huang

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CalvinNeo, JaySon-Huang

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• OWNERS [CalvinNeo,JaySon-Huang]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-18 02:45:59.982422146 +0000 UTC m=+929402.378644208: ☑️ agreed by CalvinNeo.
• 2025-02-18 03:36:35.634389831 +0000 UTC m=+932438.030611890: ☑️ agreed by JaySon-Huang.