ctutils: `core::num::NonZero<T>` support (#1368) #2114

Job	Run time
test (1.85.0)	17s
build (stable, wasm32-unknown-unknown)	14s
build (stable, thumbv7em-none-eabi)	12s
test (stable)	18s
build (1.85.0, wasm32-unknown-unknown)	19s
build (1.85.0, thumbv7em-none-eabi)	23s
minimal-versions / minimal-versions	33s
	2m 16s

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