Numeric URLs without TLD does not link

[haugstrup]

custom://q123 will link custom://1234 will not link

Granted this is a niche case, but it's not uncommon to see these types of URLs in intranets or other non-public tooling.

I think this is because urlMatchDoesNotHaveAtLeastOneWordChar uses hasWordCharAfterProtocolRegex which matches letters, but not numbers.

I believe this check should be loosened to allow numbers if the protocol includes //. For example custom://123 should link while custom:123 should not.