I'm having trouble testing changes in the ckeditor image plugin...
From what I understood, it should be something to change in https://github.com/xwiki/xwiki-platform/blob/7008a7485780afa6c1e44d8f4ac1bb1413dccf1c/xwiki-platform-core/xwiki-platform-ckeditor/xwiki-platform-ckeditor-plugins/src/main/webjar/xwiki-image/imageSelector.js#L124-L133