{pclass_link} returns relative url, which breaks on sites using SEO Friendly URLS

Summary

Malevolentme — Today at 12:07 AM @ryan B looks like an issue with the template tag {pclass_link} it appears to append "listing" in the url. E.g. https://www.domain.com/listing/index.php?action=searchresults&pclass[]=2 noticed this when adding {pclass_link} to my listing_detail_default.html I believe the intent was to be https://www.domain.com/index.php?action=searchresults&pclass[]=2

Steps to reproduce

Turn on SEO Friendly URLs and add {pclass_link} to the listing_detail_default.html template.

Open-Realty Version

3.6.3

/cc @therealryanbonham{pclass_link}