br: Change default check point lag limit (#51906)

[ti-chi-bot]

This is an automated cherry-pick of #51906

What problem does this PR solve?

Issue Number: ref #50803

Problem Summary:

What changed and how does it work?

This PR set the default value of 'check-point-lag-limit' to 24 hours, and also expose the paramter.

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

[ti-chi-bot]

PR needs rebase.

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[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-7.5@ac8777a). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #52571   +/-   ##
================================================
  Coverage               ?   72.0506%           
================================================
  Files                  ?       1412           
  Lines                  ?     411458           
  Branches               ?          0           
================================================
  Hits                   ?     296458           
  Misses                 ?      95124           
  Partials               ?      19876           

Flag	Coverage Δ
unit	72.0506% <33.3333%> (?)

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

Components	Coverage Δ
dumpling	53.9913% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.5250% <0.0000%> (?)

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BornChanger, Leavrth, YuJuncen

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Needs approval from an approver in each of these files:

• br/OWNERS [BornChanger,Leavrth,YuJuncen]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-17 07:28:02.568448554 +0000 UTC m=+425304.559390025: ☑️ agreed by BornChanger.
• 2024-07-17 08:01:11.813522394 +0000 UTC m=+427293.804463864: ☑️ agreed by YuJuncen.

[BornChanger]

/retest