chore: Next.js proxy migration & E2E integration

Former-commit-id: daf08548d0a8f45b07b4b87405edd081e823edd5

.next/static/h2FeHR2_IMO0RWTw5Go2d/_clientMiddlewareManifest.json

@@ -1,10 +1,10 @@
 [
   {
-    "regexp": "^(?:\\/(_next\\/data\\/[^/]{1,}))?(?:\\/((?!api|_next\\/static|_next\\/image|favicon.ico|admin|manifest.webmanifest|.*\\.(?:svg|png|jpg|jpeg|gif|webp|pdf|xlsx|txt|vcf|xml|webm|mp4|map)$).*))(\\\\.json)?[\\/#\\?]?$",
+    "regexp": "^(?:\\/(_next\\/data\\/[^/]{1,}))?(?:\\/((?!api|_next\\/static|_next\\/image|favicon.ico|admin|manifest.webmanifest|.*\\.(?:svg|png|jpg|jpeg|gif|webp|pdf|xlsx|txt|vcf|xml|webm|mp4|map)$).*))(\\.json)?[\\/#\\?]?$",
     "originalSource": "/((?!api|_next/static|_next/image|favicon.ico|admin|manifest.webmanifest|.*\\.(?:svg|png|jpg|jpeg|gif|webp|pdf|xlsx|txt|vcf|xml|webm|mp4|map)$).*)"
   },
   {
-    "regexp": "^(?:\\/(_next\\/data\\/[^/]{1,}))?(?:\\/(de|en))(?:\\/((?:[^\\/#\\?]+?)(?:\\/(?:[^\\/#\\?]+?))*))?(\\\\.json)?[\\/#\\?]?$",
+    "regexp": "^(?:\\/(_next\\/data\\/[^/]{1,}))?(?:\\/(de|en))(?:\\/((?:[^\\/#\\?]+?)(?:\\/(?:[^\\/#\\?]+?))*))?(\\.json)?[\\/#\\?]?$",
     "originalSource": "/(de|en)/:path*"
   }
 ]