Audit URL data collection against the `dataCollection` spec (`urlQueryParams`)

[chargome]

Verify URL handling matches the Data Collection spec — URLs: urlQueryParams must filter query strings in url.full, url.query, and request.query_string (values → [Filtered], keys preserved, encoding untouched), remove them entirely when off, and never affect url.path or span descriptions.

[linear-code]

JS-3286