[Fix] Fix frequency-based ordering in HTML domain hashing

[Fix] Fix frequency-based ordering in HTML domain hashing

The hash_top_domains function was sorting domains by frequency (descending),
but hash_domain_list was immediately re-sorting them alphabetically, which
negated the frequency information. This resulted in incorrect hashes where
domain order mattered for fuzzy matching.

Added preserve_order parameter to hash_domain_list to optionally skip
alphabetical re-sorting when frequency-based ordering should be maintained.