Add @Order annotation to gatewayRestClientCustomizer Bean

[matthew-js-porter]

Could an @Order annotation be added to the gatewayRestClientCustomizer bean? This would give users the ability to add a custom RestClientCustomizer that overrides the requestFactory if needed. I know the ClientHttpRequestFactory bean can be defined, but there could be certain scenarios where the user may have a RestClientCustomizer from a library that sets the requestFactory. Example, a RestClientCustomizer that configures a proxy.

[mehrdadbozorgmehr]

Is the value @Order(Ordered.HIGHEST_PRECEDENCE) appropriate for this bean? Can you assign me this task if it's acceptable, @spencergibb?