Support also URLs without `http`/`https` prefix

[jancurn]

But only for well-known TLDs like .com or .io only, not for strange TLDs, to ensure queries like "famous.actor" are not resolved as URL but as a query.

[Arawal123]

Hi, I’m a GSSoC’26 contributor and would like to work on this issue.

I’ll work on supporting URLs without explicit http/https prefixes for well-known TLDs while ensuring ambiguous inputs are still treated as search queries.