statstics: forcely use index to order when to init stats (#52462)

[ti-chi-bot]

This is an automated cherry-pick of #52462

What problem does this PR solve?

Issue Number: close #52466

Problem Summary:

What changed and how does it work?

forcely use index to order when to init stats

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

before:

You will see that sort will be executed in the tidb.

after:

• 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

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-8.1@29491d4). Click here to learn what that means.
The diff coverage is 100.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.1     #52508   +/-   ##
================================================
  Coverage               ?   72.4003%           
================================================
  Files                  ?       1467           
  Lines                  ?     427708           
  Branches               ?          0           
================================================
  Hits                   ?     309662           
  Misses                 ?      98787           
  Partials               ?      19259           

Flag	Coverage Δ
unit	71.2872% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	53.9957% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	41.0895% <0.0000%> (?)

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, winoros

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• OWNERS [hawkingrei,winoros]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-11 11:12:00.208997638 +0000 UTC m=+1133581.736538191: ☑️ agreed by hawkingrei.
• 2024-04-15 02:54:28.759408808 +0000 UTC m=+220287.870455258: ☑️ agreed by winoros.