clippy fixes

[clux]

CI red again from new clippy versions and new lints.

• clippy +nightly --fix on runtime + core
• one manual allow in runtime
• two stray warnings (excess whitespace)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 75.2%. Comparing base (3c3939f) to head (664c71b).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
kube-core/src/duration.rs	0.0%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1596   +/-   ##
=====================================
  Coverage   75.2%   75.2%           
=====================================
  Files         82      82           
  Lines       7334    7334           
=====================================
  Hits        5514    5514           
  Misses      1820    1820           

Files with missing lines	Coverage Δ
kube-client/src/api/core_methods.rs	73.4% <ø> (ø)
kube-core/src/object.rs	86.1% <ø> (ø)
kube-runtime/src/controller/mod.rs	29.9% <ø> (ø)
kube-runtime/src/reflector/store.rs	96.9% <ø> (ø)
kube-runtime/src/scheduler.rs	94.8% <ø> (ø)
kube-runtime/src/utils/delayed_init.rs	97.1% <ø> (ø)
kube-core/src/duration.rs	60.5% <0.0%> (ø)