hint: refactor PlanHints

[hawkingrei]

What problem does this PR solve?

Issue Number: ref #48875

Problem Summary:

What changed and how does it work?

remove Agghint in the PlanHints. we need to remove AggHint in the other LogicalPlan.

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

[elsa0520]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: elsa0520, qw4990

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-01-29 03:18:06.958900523 +0000 UTC m=+1362728.523198228: ☑️ agreed by qw4990.
• 2024-01-29 03:19:29.988422885 +0000 UTC m=+1362811.552720590: ☑️ agreed by elsa0520.

[codecov]

Codecov Report

Merging #50768 (135a916) into master (6a87b80) will increase coverage by 2.0567%.
Report is 2 commits behind head on master.
The diff coverage is 95.3846%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #50768        +/-   ##
================================================
+ Coverage   70.5970%   72.6538%   +2.0567%     
================================================
  Files          1463       1463                
  Lines        433201     433629       +428     
================================================
+ Hits         305827     315048      +9221     
+ Misses       108260      98700      -9560     
- Partials      19114      19881       +767     

Flag	Coverage Δ
integration	49.2212% <87.6923%> (?)
unit	70.2795% <100.0000%> (-0.1395%)	⬇️

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

Components	Coverage Δ
dumpling	54.2940% <ø> (ø)
parser	∅ <ø> (∅)
br	51.2776% <ø> (+5.4745%)	⬆️