statistics: fix wrong stats healthy check

[winoros]

What problem does this PR solve?

Issue Number: ref #52319

Problem Summary:

What changed and how does it work?

The IsAnalyzed is added to the wrong place.

The 100% is correct, but [0, 50) is wrong.

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

[codecov]

Codecov Report

Merging #52352 (0df6fe8) into master (555ce02) will increase coverage by 3.3218%.
The diff coverage is 100.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #52352        +/-   ##
================================================
+ Coverage   70.1481%   73.4700%   +3.3218%     
================================================
  Files          1485       1467        -18     
  Lines        419217     426781      +7564     
================================================
+ Hits         294073     313556     +19483     
+ Misses       105716      93424     -12292     
- Partials      19428      19801       +373     

Flag	Coverage Δ
integration	23.9022% <100.0000%> (?)
unit	70.9663% <25.0000%> (+1.9736%)	⬆️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (-2.3014%)	⬇️
parser	∅ <ø> (∅)
br	49.2987% <ø> (+7.0507%)	⬆️

[winoros]

The correct one

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, hi-rustin

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-06 13:46:24.007375406 +0000 UTC m=+710845.534915949: ☑️ agreed by hawkingrei.
• 2024-04-07 05:19:44.514145903 +0000 UTC m=+766846.041686449: ☑️ agreed by hi-rustin.