Update x-forwarded-proto header handling

[0xJacky]

Separate site scan's probe URL from display URL and enhance wildcard server_name parsing.

Ensures sites with wildcard server_names and proxy_protocol listeners display correctly and are clickable in the UI, avoiding internal port exposure.

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[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
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