Refactor pagination

[bitwiseman]

Description

Before submitting a PR:

• [ ] Changes must not break binary backwards compatibility. If you are unclear on how to make the change you think is needed while maintaining backward compatibility, CONTRIBUTING.md for details.
• [ ] Add JavaDocs and other comments explaining the behavior.
• [ ] When adding or updating methods that fetch entities, add @link JavaDoc entries to the relevant documentation on https://docs.github.com/en/rest .
• [ ] Add tests that cover any added or changed code. This generally requires capturing snapshot test data. See CONTRIBUTING.md for details.
• [ ] Run mvn -D enable-ci clean install site "-Dsurefire.argLine=--add-opens java.base/java.net=ALL-UNNAMED" locally. If this command doesn't succeed, your change will not pass CI.
• [ ] Push your changes to a branch other than main. You will create your PR from that branch.

When creating a PR:

• [ ] Fill in the "Description" above with clear summary of the changes. This includes:
  • [ ] If this PR fixes one or more issues, include "Fixes #" lines for each issue.
  • [ ] Provide links to relevant documentation on https://docs.github.com/en/rest where possible. If not including links, explain why not.
• [ ] All lines of new code should be covered by tests as reported by code coverage. Any lines that are not covered must have PR comments explaining why they cannot be covered. For example, "Reaching this particular exception is hard and is not a particular common scenario."
• [ ] Enable "Allow edits from maintainers".

[codecov[bot]]

Codecov Report

:x: Patch coverage is 99.57806% with 1 line in your changes missing coverage. Please review. :white_check_mark: Project coverage is 85.34%. Comparing base (b1de32d) to head (8b81765).

Files with missing lines	Patch %	Lines
.../java/org/kohsuke/github/GHCommitFileIterable.java	88.88%	0 Missing and 1 partial :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2099      +/-   ##
============================================
+ Coverage     85.02%   85.34%   +0.31%     
- Complexity     2496     2527      +31     
============================================
  Files           237      235       -2     
  Lines          7353     7280      -73     
  Branches        388      373      -15     
============================================
- Hits           6252     6213      -39     
+ Misses          871      851      -20     
+ Partials        230      216      -14     

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