Change prefix for envoy stats

From the /stats endpoint, envoy emits stats with the prefix “cluster.xds-grpc”, e.g. “cluster.xds-grpc.internal.upstream_rq_2xx”

We have third-party tooling that ingests those metrics but it is expecting “cluster.internal.upstream_rq_2xx”

Is there a way to instruct envoy to emit metrics with a custom format so it matches what my third-party tool is expecting?