Explicitly re-adds the "hand" cursor:pointer for non-disabled .btn, .close, .navbar-toggler elements, as well as forcing page-link pagination controls to always have the "hand" cursor (even if an author uses it on, say, <button> elements for a dynamically updating in-page pagination).
Controversial, as everybody jumped on the bandwagon following this article https://medium.com/simple-human/buttons-shouldnt-have-a-hand-cursor-b11e99ca374b - which does have its merits of course, but there are also counter-arguments like http://kizu.ru/en/issues/cursor-pointer/
And seeing the amount of issues we've seen following the change, and the potential complexity needed to consistently address the cursor issue (see https://github.com/twbs/bootstrap/issues/24156 where i explore how the cursor needs to be based on "intent", and how that's tough to determine), I'm favouring an opinionated take here of just reintroducing the cursor:pointer.
Closes #24954 (closed), closes #24156 (closed), and closes #23224 (closed).