domain/rg: organize and enhance the code of RunawayChecker

[JmPotato]

What problem does this PR solve?

Issue Number: ref #54434.

What changed and how does it work?

• Delete some unnecessary code.
• Add more comments.
• Organize and enhance some functions.

Check List

Tests

• Unit test
• Integration test

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov]

Codecov Report

Attention: Patch coverage is 82.71605% with 14 lines in your changes missing coverage. Please review.

Project coverage is 75.6536%. Comparing base (eeb3d73) to head (c6dce55).
Report is 4 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #55331        +/-   ##
================================================
+ Coverage   74.8640%   75.6536%   +0.7896%     
================================================
  Files          1576       1598        +22     
  Lines        365691     449887     +84196     
================================================
+ Hits         273771     340356     +66585     
- Misses        72108      88386     +16278     
- Partials      19812      21145      +1333     

Flag	Coverage Δ
integration	52.1828% <0.0000%> (?)
unit	72.0936% <82.7160%> (-1.7368%)	⬇️

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

Components	Coverage Δ
dumpling	52.9567% <ø> (-2.2327%)	⬇️
parser	∅ <ø> (∅)
br	63.1882% <ø> (+15.3901%)	⬆️

[HuSharp]

/retest-required

[JmPotato]

/cc @nolouch @glorv @HuSharp

PTAL

[ti-chi-bot]

@HuSharp: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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[D3Hunter]

/approve

for domain pkg

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: D3Hunter, glorv, HuSharp, nolouch

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Needs approval from an approver in each of these files:

• OWNERS [D3Hunter,glorv]
• pkg/domain/OWNERS [D3Hunter]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-14 08:39:07.99363281 +0000 UTC m=+343632.697102454: ☑️ agreed by glorv.
• 2024-08-14 08:57:30.301983234 +0000 UTC m=+344735.005452889: ☑️ agreed by nolouch.