Investigate applying ReactorNettyHttpClientMapper beans to the HttpClient used by an auto-configured ReactorClientHttpRequestFactoryBuilder

I'm trying out the new HTTP client enhancements made with 3.4.0 and noticed:

• spring.http.client properties don't apply to auto-configured WebClient.Builder instances.
• My ReactorNettyHttpClientMapper beans are not applied to the HttpClient created by ReactorClientHttpRequestFactoryBuilder.

I was hoping to be able to simplify my configuration by re-using the same (or rather identically configured) Reactor HttpClient instances across my WebClient and RestTemplate beans, but it looks like I still need to configure those separatedly.

Are there plans to harmonize the configuration to allow the new properties and existing customizers like ReactorNettyHttpClientMapper to apply globally to all auto-configured HTTP clients?

Related:

• #43068 (mentions WebClient, but was closed as a duplicate).
• #43079 (wants to use the new RequestFactoryBuilder approach for WebClient).

Start by tracing the auto-configured WebClient.Builder and ReactorClientHttpRequestFactoryBuilder mentioned in the issue, then compare how spring.http.client properties and ReactorNettyHttpClientMapper beans are handled. Done means establishing whether those configurations can be applied consistently to both auto-configured HTTP clients and documenting or implementing the agreed approach.