Description

PHP supports RFC1867 (multipart/form-data) for non-POST HTTP verbs since PHP 8.4 and this should be implemented in Symfony's Request object.

At present, sending multipart/form-data with any verb other than POST results in an empty Request parameters object. This is a very bad user experience, as this leads the developer to go hunting for where and how the data went missing.

This addresses long-standing frustrations like #9226 which have plagued developers for the past 12 years.