Don't reload page on "follow new threads"

[cellio]

https://meta.codidact.com/posts/287652

If you click on "follow new" or "unfollow new" under an answer, the action navigates to the answer-specific URL, meaning a page load and the answer-navigation banner. If you click on one of these links under a top-level post, the URL doesn't change but the page reloads anyway, so I conclude that the logic is "generate URL, then go to it".

Can we treat the follow/unfollow controls as in-page controls, changing the follow/unfollow text (to reflect the new state) but not reloading the page? This feels similar to expanding/collapsing a comment thread or opening and then closing the flag or close modal.