disagg: Fix deployed on kingsoft ks3 (#10599)

[ti-chi-bot]

This is an automated cherry-pick of #10599

What problem does this PR solve?

Issue Number: close #10598, ref #10569

Problem Summary:

What is changed and how it works?

* Support parsing kingsoft ks3 endpoint as `CloudVendor::KingsoftCloud`
* Improve the compatibility of deployed under unknown cloud vendor that need virtual addressing

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
  • Verified on internal testing env with kingsoft cloud ks3
• 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]

[APPROVALNOTIFIER] This PR is APPROVED

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

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Details

Needs approval from an approver in each of these files:

• OWNERS [JaySon-Huang,JinheLin]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-12-09 12:55:50.005700545 +0000 UTC m=+959294.819478137: ☑️ agreed by JaySon-Huang.
• 2025-12-09 15:48:49.081962943 +0000 UTC m=+969673.895740515: ☑️ agreed by JinheLin.

[JaySon-Huang]

/test pull-integration-next-gen