restore: correct new collation when "--check-requirements=false" (#49579)

[ti-chi-bot]

This is an automated cherry-pick of #49579

What problem does this PR solve?

Issue Number: close #49466

Problem Summary:

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.

Fix the issue that unset new collation when --check-requirements=false

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BornChanger, Leavrth

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-02-18 08:41:03.757303464 +0000 UTC m=+173752.504926569: ☑️ agreed by BornChanger.
• 2024-02-19 03:41:15.219627823 +0000 UTC m=+242163.967250934: ☑️ agreed by Leavrth.

[BornChanger]

/retest

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.5@20c3e7d). Click here to learn what that means.
The diff coverage is 60.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #49953   +/-   ##
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  Coverage               ?   71.9815%           
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  Files                  ?       1403           
  Lines                  ?     407338           
  Branches               ?          0           
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  Hits                   ?     293208           
  Misses                 ?      94409           
  Partials               ?      19721           

Flag	Coverage Δ
unit	71.9815% <60.0000%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	53.9913% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.2667% <0.0000%> (?)