Only canonical URLs need to be listed in the sitemap, While Google states that doing this is often a weak canonicalization signal. The JS redirect looks like some a messy circumstance, but to reply your question: For those who set a canonical tag from ourdomain.be to ourdomain.be/en, then I would https://addons.prestashop.com/pt/seo-referenciamento-natural/31857-rich-snippets-automaticos-json-ld-opengraph-seo.html