"429 Too Many Requests" not captured in `apollo_router_http_requests_total` metric

[abernix]

When 429 Too Many Request's are triggered on account of limiting, they aren't counted in the apollo_router_http_request_total metric. Unsure if that is intentional or not, but it would be desirable to be able to capture and observe that metric somewhere. Is there a place to observe it separately, or is it meant to be included in the apollo_router_http_requests_total number?