hybrid-array: add `Borrow(Mut)` bounds to `SliceOps` (#1022) #1578

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	1m 27s
test (1.65.0)	1m 23s
build (1.65.0, wasm32-unknown-unknown)	1m 21s
test (stable)	20s
build (stable, thumbv7em-none-eabi)	20s
build (stable, wasm32-unknown-unknown)	19s
	5m 10s

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