Bring the overflow behavior in bit shifts in sync with `std` #1107

Job	Run time
minimal-versions	43s
clippy	17s
build-benchmarks	51s
cross (aarch64-unknown-linux-gnu, stable)	2m 37s
build (1.70.0, thumbv7em-none-eabi)	40s
cross (powerpc-unknown-linux-gnu, stable)	2m 54s
build (1.70.0, wasm32-unknown-unknown)	38s
dudect	21s
rustfmt	10s
build (stable, thumbv7em-none-eabi)	55s
test (i686-unknown-linux-gnu, 1.70.0, sudo apt update && sudo apt install gcc-multilib)	1m 58s
build (stable, wasm32-unknown-unknown)	38s
doc	23s
test (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	1m 44s
test (x86_64-unknown-linux-gnu, 1.70.0)	1m 34s
test (x86_64-unknown-linux-gnu, stable)	1m 28s
	17m 51s

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