fix(primitives): hex macro re-export #2259

Job	Run time
miri --no-default-features	4m 49s
features stable	1m 29s
miri	4m 53s
features stable --all-targets	2m 39s
clippy	44s
miri --all-features	7m 30s
check no_std	37s
features nightly	1m 35s
features nightly --all-targets	2m 53s
docs	31s
fmt	11s
wasm	27s
test ubuntu-latest stable --no-default-features	51s
test ubuntu-latest stable	53s
test ubuntu-latest nightly --no-default-features	48s
test ubuntu-latest nightly	45s
test ubuntu-latest 1.81 --no-default-features	27s
test ubuntu-latest 1.81	28s
test windows-latest stable --no-default-features	3m 11s
test windows-latest stable	2m 26s
test windows-latest nightly --no-default-features	2m 13s
test windows-latest nightly	2m 14s
test windows-latest 1.81 --no-default-features	1m 4s
test windows-latest 1.81	1m 0s
test ubuntu-latest 1.81 --features json	29s
test windows-latest 1.81 --features json	1m 10s
test ubuntu-latest nightly --all-features	1m 5s
test windows-latest nightly --all-features	2m 51s
deny / cargo deny check	22s
ci success	1s
	50m 36s

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