chore: improve Display and Debug for BlockId #5350

Job	Run time
wasm-unknown	1m 3s
wasm-wasi	1m 51s
doctest	1m 25s
check no_std	35s
feature-checks	5m 31s
test ubuntu-latest stable --no-default-features	1m 30s
clippy	50s
docs	58s
test ubuntu-latest stable	1m 28s
test ubuntu-latest stable --all-features	2m 21s
test ubuntu-latest nightly --no-default-features	1m 21s
fmt	14s
test ubuntu-latest nightly	1m 15s
test ubuntu-latest nightly --all-features	2m 8s
test ubuntu-latest 1.81 --no-default-features	53s
test ubuntu-latest 1.81	56s
test windows-latest stable --no-default-features	4m 56s
test windows-latest stable	4m 41s
test windows-latest stable --all-features	5m 52s
test windows-latest nightly --no-default-features	4m 11s
test windows-latest nightly	3m 47s
test windows-latest nightly --all-features	5m 19s
test windows-latest 1.81 --no-default-features	2m 19s
test windows-latest 1.81	2m 37s
ci success	2s
	58m 3s

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