br: sys collation check (#22387)

[ti-chi-bot]

This is an automated cherry-pick of #22387

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• This PR is translated from:br: sys collation check docs-cn#21306
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[gemini-code-assist]

Summary of Changes

Hello @ti-chi-bot, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the documentation for TiDB's Backup & Restore (BR) tool. It introduces details about a new feature that enhances the robustness of system table restoration by allowing collation compatibility checks, addressing potential issues arising from case-sensitivity differences across cluster versions.

Highlights

• BR Collation Check: Information has been added regarding the new --sys-check-collation parameter in BR, available from v8.5.5. This parameter enables checking collation compatibility when restoring system tables, preventing restore failures due to case conflicts.

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Changelog

• br/backup-and-restore-overview.md
  • Added a note explaining the --sys-check-collation parameter for BR, which supports checking collation compatibility when restoring system tables from v8.5.5 onwards.

Activity

• This pull request is an automated cherry-pick of br: sys collation check #22387.
• The PR targets master and v8.5 branches.

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[gemini-code-assist]

Code Review

This pull request adds a note about the new --sys-check-collation parameter in BR for checking collation compatibility during restore. My review corrects a typo in the new documentation. The changes are otherwise good.

[hfxsd]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hfxsd

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch master: #22463.
But this PR has conflicts, please resolve them!