chore: shorten map type alias names #2204

Job	Run time
check no_std	41s
docs	55s
clippy	1m 17s
features stable	2m 14s
features stable --all-targets	4m 3s
fmt	13s
features nightly	2m 29s
miri --no-default-features	5m 9s
test ubuntu-latest stable --no-default-features	1m 20s
features nightly --all-targets	3m 47s
miri	5m 24s
test ubuntu-latest stable	1m 15s
miri --all-features	7m 45s
wasm	2m 16s
test ubuntu-latest nightly --no-default-features	1m 14s
test ubuntu-latest nightly	1m 18s
test ubuntu-latest 1.81 --no-default-features	40s
test ubuntu-latest 1.81	36s
test windows-latest stable --no-default-features	3m 34s
test windows-latest stable	3m 38s
test windows-latest nightly --no-default-features	3m 23s
test windows-latest nightly	3m 26s
test windows-latest 1.81 --no-default-features	2m 17s
test windows-latest 1.81	2m 26s
test ubuntu-latest 1.81 --features json	49s
test windows-latest 1.81 --features json	1m 35s
test ubuntu-latest nightly --all-features	1m 24s
test windows-latest nightly --all-features	3m 39s
deny / cargo deny check	20s
ci success	11s
	1h 9m 18s

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