[Serializer] Add an option to the `XmlEncoder` allowing to decode tags as collection#58604

AlexandreGerault wants to merge 8 commits intosymfony:7.4symfony/symfony:7.4from

AlexandreGerault:feature/serializer/add_force_collection_when_decoding_xmlAlexandreGerault/symfony:feature/serializer/add_force_collection_when_decoding_xmlCopy head branch name to clipboard