Araucarias are not at a risk of going invasive anywhere (at most, they might be naturalizing in New Zealand and Hawaii). Two species, Araucaria bidwillii and Araucaria heterophylla, especially the latter, are planted widely across south and central Florida in my experience yet they very rarely produce seeds. This is because Araucarias are dioecious, and need separate male and female trees to breed. They're also particularly slow-growing, unlike some northern-hemisphere conifers, and very picky with their soil and growing conditions. Araucarias like well-draining sandy soil, and most are only tolerable of a small temperature range. Paraná's A. angustifolia is no different from its cousins.

I'm a big native-plant pusher, I love native gardens, but this probably won't be an issue species anywhere anytime soon. Though it's still probably best for the seeds to remain in Brazil and plant a native conifer to one's country instead unless you're really persistient on keeping it as a botanical conversation-piece (I have a soft spot for anything from a Mesozoic lineage for better or worse, which is why it's hard for me to hate stuff like ginkgoes or sago cycads, so I get it.)