Nginx Reverse Proxy Server can be placed between HTTPRoute and the application services, then in Nginx you can configure accordingly,

Here is a blog written by me explaining how it can be done

https://blog.thecloudside.com/solving-gkes-regex-path-matching-limitation-with-nginx-reverse-proxy-server-in-a-multicluster-gke-a521fd97e14c

This is for MultiCluster GKE, But for Single Cluster as well, this implementation can be referred.