url: fix definitions of `URL`/`SearchParams` methods and accessors

This fixes getter and setter names for the WHATWG URL classes, and fixes
a few other inconsistencies with browsers implementations.

Co-authored-by: Gerhard Stöbich <deb2001-github@yahoo.de>

PR-URL: https://github.com/nodejs/node/pull/36799


Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>