[Java][jaxrs-resteasy] add @Valid when bean validation is enabled

[tnmtechnologies]

Description

This issue is like the #1018 but for java jaxrs-resteasy generator.

openapi-generator version

3.3.0

OpenAPI declaration file content or url

see #1018

Command line used for generation

see #1018

Steps to reproduce

see #1018

Related issues/PRs

#1018

Suggest a fix/enhancement

The fix should be close to #1019 but of course for jaxrs-resteasy generator.