chore: simplify the tick internals

[martintmk]

simplifying some internals of tick without any behavioral changes.

[github-actions]

⚠️ Breaking Changes Detected

error: unsupported rustdoc format v57 for file: /home/runner/work/oxidizer/oxidizer/target/semver-checks/local-bytesbuf-0_2_2-default-fee6ca6725f06642/target/doc/bytesbuf.json
(supported formats are v53, v55, v56)

Stack backtrace:
   0: anyhow::error::<impl core::convert::From<E> for anyhow::Error>::from
   1: cargo_semver_checks::data_generation::request::load_rustdoc_with_optional_metadata
   2: cargo_semver_checks::data_generation::request::CrateDataRequest::resolve
   3: cargo_semver_checks::rustdoc_gen::StatefulRustdocGenerator<cargo_semver_checks::rustdoc_gen::ReadyState>::load_rustdoc
   4: cargo_semver_checks::Check::check_release::{{closure}}
   5: cargo_semver_checks::Check::check_release
   6: cargo_semver_checks::exit_on_error
   7: cargo_semver_checks::main
   8: std::sys::backtrace::__rust_begin_short_backtrace
   9: main

If the breaking changes are intentional then everything is fine - this message is merely informative.

Remember to apply a version number bump with the correct severity when publishing a version with breaking changes (1.x.x -> 2.x.x or 0.1.x -> 0.2.x).

[codecov]

Codecov Report

❌ Patch coverage is 84.61538% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.9%. Comparing base (1f453b8) to head (fdcd1fb).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/tick/src/clock_control.rs	25.0%	3 Missing ⚠️
crates/tick/src/state.rs	90.0%	1 Missing ⚠️

❌ Your project check has failed because the head coverage (99.9%) is below the target coverage (100.0%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #228     +/-   ##
========================================
- Coverage   100.0%   99.9%   -0.1%     
========================================
  Files         105     105             
  Lines        6761    6774     +13     
========================================
+ Hits         6761    6770      +9     
- Misses          0       4      +4     

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