fix: svg favicon (#296)

* fix: whitelist svg favicon in auth middleware

* test: emerald favicon for dark theme

* fix: revert to white

frontend/middleware.ts

@@ -9,6 +9,6 @@ export const config = {
      * - _next/image (image optimization files)
      * - favicon.ico (favicon file)
      */
-    '/((?!api|_next/static|_next/image|favicon.ico|login|lockbox).*)',
+    '/((?!api|_next/static|_next/image|favicon.ico|favicon.svg|login|lockbox).*)',
   ],
 }