Add tests for `Array::from(_mut)_slice` methods #424

Job	Run time
clippy	19s
careful	58s
test (1.85.0)	51s
doc	15s
test (stable)	46s
coverage	21s
miri (x86_64-unknown-linux-gnu)	50s
build (stable, wasm32-unknown-unknown)	1m 8s
miri (s390x-unknown-linux-gnu)	1m 2s
build (stable, thumbv7em-none-eabi)	1m 17s
build (1.85.0, armv7a-none-eabi)	1m 19s
build (1.85.0, wasm32-unknown-unknown)	1m 23s
build (1.85.0, thumbv7em-none-eabi)	1m 21s
rustfmt	6s
build (stable, armv7a-none-eabi)	1m 13s
	13m 9s

Provide feedback