Disable/remove attachment pages on legacy WordCamp sites

[jonoalderson]

New WordPress sites automatically disable attachment pages, but legacy WordCamp sites still have them; this causes problems with pages like https://europe.wordcamp.org/2022/additional-sponsorship-opportunities-released/27859955302_dcccbca1e9_h/ attracting spam (related) and generally gumming up the SEO & analytics.

Can we please:

• Disable these on existing/legacy WordCamp sites
• Add logic to trigger 301 redirects to the respective attachment media URL (i.e, the actual image/file)

[dd32]

Ref: https://make.wordpress.org/core/2023/10/16/changes-to-attachment-pages/