Clarify that both RESTEasy Classic and Reactive support locale resolution
Clarify that both RESTEasy Classic and Reactive support locale resolution

As far as I can't tell, the feature is not limited to RESTEasy Reactive:
we have both `io.quarkus.hibernate.validator.runtime.locale.ResteasyClassicLocaleResolver`
and `io.quarkus.hibernate.validator.runtime.locale.ResteasyReactiveLocaleResolver`.

quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus