hybrid-array: get rid of `ArrayExt::from_slice` (#1008) #524

Job	Run time
aarch64 (aarch64-unknown-linux-gnu, 1.60.0)	1m 51s
cross (powerpc-unknown-linux-gnu, 1.60.0)	1m 40s
aarch64 (aarch64-unknown-linux-gnu, stable)	48s
build (1.60.0, armv7a-none-eabi)	1m 20s
cross (powerpc-unknown-linux-gnu, stable)	39s
test (i686-unknown-linux-gnu, ubuntu-latest, 1.60.0, sudo apt update && sudo apt install gcc-mult...	1m 51s
build (1.60.0, thumbv7em-none-eabi)	1m 17s
test (i686-unknown-linux-gnu, ubuntu-latest, stable, sudo apt update && sudo apt install gcc-mult...	35s
build (1.60.0, wasm32-unknown-unknown)	1m 18s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.60.0)	1m 30s
test (x86_64-unknown-linux-gnu, ubuntu-latest, stable)	20s
build (stable, armv7a-none-eabi)	15s
test (x86_64-apple-darwin, macos-latest, 1.60.0)	1m 58s
build (stable, thumbv7em-none-eabi)	13s
test (x86_64-apple-darwin, macos-latest, stable)	33s
build (stable, wasm32-unknown-unknown)	15s
test (x86_64-pc-windows-msvc, windows-latest, 1.60.0)	1m 56s
test (x86_64-pc-windows-msvc, windows-latest, stable)	55s
minimal-versions / minimal-versions	49s
	20m 3s

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