expression: fix infinity loop in timestampadd (#54916)

[ti-chi-bot]

This is an automated cherry-pick of #54916

What problem does this PR solve?

Issue Number: close #54908

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 `timestampadd` function enters into infinity loop when the first parameter is 'month' and the second parameter is a negative number.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.5@6faf156). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #54972   +/-   ##
================================================
  Coverage               ?   72.0072%           
================================================
  Files                  ?       1413           
  Lines                  ?     411650           
  Branches               ?          0           
================================================
  Hits                   ?     296418           
  Misses                 ?      95337           
  Partials               ?      19895           

Flag	Coverage Δ
unit	72.0072% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9400% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.5040% <0.0000%> (?)

[windtalker]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: windtalker, XuHuaiyu

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-29 03:54:04.632579138 +0000 UTC m=+155160.912627200: ☑️ agreed by XuHuaiyu.
• 2024-07-29 04:17:26.1695264 +0000 UTC m=+156562.449574463: ☑️ agreed by windtalker.