raw_restore: fix the issue that raw restore rewrite the t prefix keys (#35641)

[ti-srebot]

cherry-pick #35641 to release-5.1
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/35692

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git push git@github.com:ti-srebot/tidb.git pr/35692:release-5.1-fde7c36e10bf

---

What problem does this PR solve?

Issue Number: close #35279

Problem Summary:

What is changed and how it works?

Check List

Tests

• Integration test
• Manual test (add detailed scripts or steps below)
  before this PR

Release note

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

fix the issue that raw restore rewrite the t prefix keys

[ti-chi-bot]

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[ti-chi-bot]

@ti-srebot: This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

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[ti-srebot]

/run-all-tests

[ti-srebot]

@3pointer you're already a collaborator in bot's repo.

[VelocityLight]

This pull request is closed because it's related version has closed automatic cherry-picking.
If it's still needed, you can reopen it or just regenerate it using bot,
see:

• https://prow.tidb.io/command-help#cherrypick
• https://book.prow.tidb.net/#/plugins/cherrypicker

You can find more details at:

• https://internals.tidb.io/t/topic/785