Thanks for asking question and reaching here. At this point of time this is not possible to do on SWA.
You can do this by creating an Azure Front Door instance and using a SWA as the backend endpoint.
You may refer to tutorial here which would be helpful: https://learn.microsoft.com/en-us/azure/static-web-apps/front-door-manual
Also, the best way to share your feedback would be to create a Feedback item and upvote it. The product group monitors this site for feedback. This is the best way to ensure you are heard and you may receive a response depending on how much they information they can currently share.
Please let us know if you have further query or issue remains.