Fix Clippy lints introduced in Clippy 0.1.85

[gsson]

Clippy 0.1.85 (introduced in Rust 1.85.0) adds or updates a few lints, causing builds to fail.

In particular the changes to the clippy::useless_conversion lint that was changed in rust-lang/rust-clippy#13756 and the clippy::precedence lint that was changed in rust-lang/rust-clippy#13743 are causing issues.

The precedence fix changes things that could impact functionality, so tests were added. I have not run any benchmarks, but https://godbolt.org/z/j78fETzbT seems to indicate better codegen with the new code.

Pre-review checklist

• I have split my patch into logically separate commits.
• All commit messages clearly explain what they change and why.
• I added relevant tests for new features and bug fixes.
• All commits compile, pass static checks and pass test.
• PR description sums up the changes and reasons why they should be introduced.
• I have provided docstrings for the public items that I want to introduce.
• I have adjusted the documentation in ./docs/source/.
• I added appropriate Fixes: annotations to PR description.

[github-actions]

cargo semver-checks found no API-breaking changes in this PR! 🎉🥳
Checked commit: de6a337