ddl: improve priority of suppressErrorTooLongKeyKey for DM (#55164)

[ti-chi-bot]

This is an automated cherry-pick of #55164

What problem does this PR solve?

Issue Number: close #55138

Problem Summary:

seems suppressErrorTooLongKeyKey is only used by DM, so increase its priority

What changed and how does it work?

Check List

Tests

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

  • I checked and no code files have been changed.

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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[fzzf678]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-30 09:44:19.141901532 +0000 UTC m=+5583.659954450: ☑️ agreed by lance6716.
• 2024-08-30 09:48:49.660533027 +0000 UTC m=+5854.178585953: ☑️ agreed by fzzf678.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fzzf678, lance6716

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[lance6716]

/retest

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-6.5@2253874). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
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[lance6716]

/cherry-pick release-7.1

[ti-chi-bot]

@lance6716: new pull request created to branch release-7.1: #57108.

In response to this:

/cherry-pick release-7.1

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