fix(web): resolve Payload CMS build error with Node.js ESM loader

Payload CMS imports .css/.scss/.svg files that Node.js ESM can't handle
during page data collection. Added a custom ESM loader that stubs these
asset imports, fixing the build that has been broken since the upgrade.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/next.config.ts

@@ -90,7 +90,6 @@ const config: NextConfig = {
     "@payloadcms/richtext-lexical",
     "@payloadcms/next",
     "@payloadcms/ui",
-    "react-image-crop",
     "sharp",
     "libsodium-wrappers",
   ],
@@ -130,7 +129,7 @@ const config: NextConfig = {
   },
 
   /** Enables hot reloading for local packages without a build step */
-  transpilePackages: INTERNAL_PACKAGES,
+  transpilePackages: [...INTERNAL_PACKAGES, "react-image-crop"],
   experimental: {
     optimizePackageImports: INTERNAL_PACKAGES,
   },