Description:
Envoy Proxy deployment is not cleaned up when we customize the deployment name, replicas etc using EnvoyProxy resource,

Repro steps:

1. Create a Gateway and use a EnvoyProxy to set a custom name and increase the replicas.
2. I tried deleting the Gateway and expected the envoy gateway to delete the envoy proxy deployment and service, but it did not. '
3. Next I created another Gateway with an EnvoyProxy resource. Then I deleted the EnvoyProxy, envoy gateway created a single replica deployment with the a default name but did not delete the older deployment.
4. Now when I deleted the Gateway , the new deployment with default name and the service were deleted but the older deployment with custom name still exists.

Environment:
Envoy Gateway version - 1.1.2

Logs:
I could not see any logs in Envoy Gateway pods when I deleted the Gateway.