We figured it out without forking and are continuing to use patch-package.
The bundled JS code from Strapi is not minified/uglified and resides in /node_modules (e.g. /node_modules/@strapi/admin/dist/_chunks/HomePage-2690d237.mjs). This can be edited and patched via patch-package. It’s code is different than before as these bundles contain jsxs and jsx factory functions. The references to this JS bundle are hardcoded where used, so there is no fear of it changing during our builds with this Strapi version. If a new Strapi version comes along, just have to re-apply any customizations like before and rerun patch-package.
Thanks.