Revert #2097 (#3050)

Fixes #2293.

#2097 wrapped
the join callback in an animation frame, therefore delaying the history
push until the DOM is already patched. This causes relative file paths
to be incorrectly resolved. Because #2173 adds the animation frame to
the scroll function, this should still work as expected and at least
in my manual tests it does.

assets/js/phoenix_live_view/live_socket.js

@@ -406,7 +406,7 @@ export default class LiveSocket {
           DOM.findPhxSticky(document).forEach(el => newMainEl.appendChild(el))
           this.outgoingMainEl.replaceWith(newMainEl)
           this.outgoingMainEl = null
-          callback && requestAnimationFrame(() => callback(linkRef))
+          callback && callback(linkRef)
           onDone()
         })
       }