fix: hand scroll behaviour back to Nuxt so hash anchors and list scrolls work

[ThibaudDauce]

The first bug was anchors in the menu of https://www.data.gouv.fr/pages/donnees-energie doing nothing, but we have a lot of weird scroll stuff because we override the Nuxt default scroll behavior. I fixed some others on the way, it should be better (and tested) now:

• clicking an anchor in a page menu goes to the section, and opening a link with an #anchor lands on it too
• switching tab keeps your reading position, on every tabbed page now (organizations were missing)
• but going to another dataset from a tab still brings you back to the top
• changing page in a list brings you to the top of the list instead of the top of the page, and leaves the page alone when that top is already on screen
• searching, filtering or sorting brings you back to the first result
• lists don't vanish while they reload, so the page doesn't jump around anymore