[Spring framework 7 is released](https://spring.io/blog/2025/11/13/spring-framework-7-0-general-availability) and there are a few breaking changes. One of which is the removal of [HttpHeaders.containsKey](https://github.com/spring-projects/spring-framework/blob/6.2.x/spring-web/src/main/java/org/springframework/http/HttpHeaders.java#L1811) which is used in multiple places. Any intention of supporting this?