hybrid-array: remove `ByteArray` alias #440

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	1m 17s
build (1.65.0, wasm32-unknown-unknown)	1m 31s
build (stable, thumbv7em-none-eabi)	23s
build (stable, wasm32-unknown-unknown)	36s
test (1.65.0)	1m 24s
test (stable)	15s
minimal-versions / minimal-versions	26s
	5m 52s

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