Avoid /my-prefix from being redirected to /my-prefix/

Avoid https://my.domain/my-prefix from being redirected to
https://my.domain/my-prefix/ (with slash at the end) after SSR.

See the documentation for the redirect option:

https://expressjs.com/en/resources/middleware/serve-static.html

src/server.jsx

@@ -73,6 +73,9 @@ if (process.env.RAZZLE_PREFIX_PATH) {
       process.env.BUILD_DIR
         ? path.join(process.env.BUILD_DIR, 'public')
         : process.env.RAZZLE_PUBLIC_DIR,
+      {
+        redirect: false, // Avoid /my-prefix from being redirected to /my-prefix/
+      },
     ),
   );
 }