User expectations wrt data plane when EnvoyProxy validation fails

*Description*:
Today if the user configures an incorrect `EnvoyProxy` configuration that is linked to the `GatewayClass` using the `parametersRef` field, the status on the `GatewayClass` is updated to `Accepted=False` with an `InvalidParameters` reason as shown [here](https://github.com/envoyproxy/gateway/pull/1107#issuecomment-1498226232).

This **does not affect the programing of `GatewayClass` child resources `Gateway`, `HTTPRoute` resources in the data plane** , but **resets the data plane infrastructure to default values** (since the `EnvoyProxy` is invalid), which may cause connection resets.

Raising this issue to gauge if this an acceptable behaviour