fix: move order of handle and swap in BinaryHeap::pop
When the heap would contain only one element, changing the handle index would crash if the swap is done first
[A venir] Mise en place de quotas sur nos instances GitLab. Plus d'information sur : https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565
[Coming soon] Quotas installation on our GitLab instances. More information: https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565
When the heap would contain only one element, changing the handle index would crash if the swap is done first