Spring Security's `OnCommitedResponseWrapper` does not override the `setHeader`, `setIntHeader`, `addIntHeader`
methods. This means that if the `Content-Length` response header is specified using any of those methods then
the response body length is not tracked and can be committed before the response headers are written.
Spring Security should override the missing methods and track `Content-Length` as is already done for `addHeader`.
This issue is the underlying problem for spring-projects/spring-framework#36381
Closes gh-18797
Robert Winch
1dae9aa459