Spring Improve RequestPartMethodArgumentResolver Javadoc

The Javadoc for org.springframework.web.servlet.mvc.method.annotation.RequestPartMethodArgumentResolver should mention that validation is performed not only for @javax.validation.Valid but also for Spring's @org.springframework.validation.annotation.Validated or custom annotations whose name starts with Valid.

Comment From: sbrannen

Related to #27042 and #27050.

Comment From: sbrannen

This has been merged into main.

Thanks