url.searchParams.set() already encodes the values passed!
(this is a partial revert of 0472d43e, the change in statusbar-rss.vue was correct)
@kakkokari-gtyih you probably want to cherry-pick this: the rss reader in the status bar works fine, the widgets don't, because they get something like https%3A%2F%2Flobste.rs%2Frss instead of https://lobste.rs/rss
