runtime: Resolve Rust 1.88 clippy lints and format strings

[steviez]

Problem

Working towards #6850, broken out from #6854

Summary of Changes

• Run cargo clippy --fix --tests with Rust 1.88.0 set in rust-toolchain.toml
  • These should only be instances of uninlined_format_args
• Run cargo fmt with format_strings = true set in rustfmt.toml

[codecov-commenter]

Codecov Report

❌ Patch coverage is 69.85294% with 41 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.2%. Comparing base (4c47fca) to head (41016b0).

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #7434     +/-   ##
=========================================
- Coverage    83.2%    83.2%   -0.1%     
=========================================
  Files         798      798             
  Lines      363025   363043     +18     
=========================================
+ Hits       302379   302381      +2     
- Misses      60646    60662     +16     

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[brooksprumo]