Decouple endpoint updates from listener and route updates

*Description*:
>Describe the issue.

We've seen in https://github.com/envoyproxy/gateway/pull/7394 that translation config involving slow or faulty I/O associated with remote configuration (jwt, oidc, wasm) slows down the entire translation

This impacts common update flows such as deployment rollout and slows it down.

We need to decouple endpoint updates from the rest of the updates which is more critical when dealing with live traffic

[optional *Relevant Links*:]
>Any extra documentation required to understand the issue.