planner: add more test cases for unqualified plan cache cases in statement_summary

[qw4990]

What problem does this PR solve?

Issue Number: ref #50618

Problem Summary: planner: add more test cases for unqualified plan cache cases in statement_summary

What changed and how does it work?

planner: add more test cases for unqualified plan cache cases in statement_summary

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

[tiprow]

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tangenta, time-and-fate

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-22 07:04:12.580804535 +0000 UTC m=+840071.691850984: ☑️ agreed by tangenta.
• 2024-04-22 07:13:32.957499209 +0000 UTC m=+840632.068545659: ☑️ agreed by time-and-fate.

[codecov]

Codecov Report

Merging #52802 (823d2e4) into master (f1ddb5a) will increase coverage by 1.5730%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #52802        +/-   ##
================================================
+ Coverage   72.3121%   73.8851%   +1.5730%     
================================================
  Files          1473       1473                
  Lines        427516     427516                
================================================
+ Hits         309146     315871      +6725     
+ Misses        99093      91771      -7322     
- Partials      19277      19874       +597     

Flag	Coverage Δ
integration	26.7754% <ø> (?)

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	49.8336% <ø> (+8.6344%)	⬆️