fix(syn-solidity): correctly parse invalid bytes* etc as custom #2209

Job	Run time
check no_std	39s
clippy	1m 12s
docs	54s
features stable	2m 2s
fmt	14s
features stable --all-targets	3m 22s
miri --no-default-features	5m 5s
features nightly	2m 25s
miri	5m 5s
features nightly --all-targets	3m 36s
test ubuntu-latest stable --no-default-features	1m 20s
wasm	28s
miri --all-features	7m 42s
test ubuntu-latest stable	1m 16s
test ubuntu-latest nightly --no-default-features	1m 11s
test ubuntu-latest nightly	1m 15s
test ubuntu-latest 1.81 --no-default-features	32s
test ubuntu-latest 1.81	35s
test windows-latest stable --no-default-features	3m 18s
test windows-latest stable	3m 39s
test windows-latest nightly --no-default-features	2m 45s
test windows-latest nightly	2m 47s
test windows-latest 1.81 --no-default-features	1m 20s
test windows-latest 1.81	1m 20s
test ubuntu-latest 1.81 --features json	34s
test windows-latest 1.81 --features json	1m 25s
test ubuntu-latest nightly --all-features	1m 21s
test windows-latest nightly --all-features	3m 11s
deny / cargo deny check	19s
ci success	1s
	1h 0m 53s

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