EnvoyProxy accesslog default not working as expected

[zirain]

https://envoyproxy.slack.com/archives/C03E6NHLESV/p1751364508406689

Following configuration is ignored instead of setting default JSON format.

apiVersion: gateway.envoyproxy.io/v1alpha1
kind: EnvoyProxy
metadata:
  name: proxy-config-public
  namespace: envoy-gateway-system
spec:
  telemetry:
    accessLog:
      settings:
        - sinks:
            - type: File
              file:
                path: /dev/stdout

[zirain]

related to 8f48f51