Fixed 404 error in browser console on Divi 5 for magnific-popup.js and magnific_popup.css
The plugin now verifies the bundled Magnific Popup files actually exist on disk before enqueuing them, and cleanly falls back to the built-in vanilla JS lightbox when they are not available
Enqueue hook moved to priority 20 so Magnific Popup detection correctly sees scripts already registered by Divi