[Glitch] Upgrade to React 18

Port 8d6aea3326 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/utils/dom_helpers.js

@@ -1,10 +1,6 @@
 //  Package imports.
 import { supportsPassiveEvents } from 'detect-passive-events';
 
-//  This will either be a passive lister options object (if passive
-//  events are supported), or `false`.
-export const withPassive = supportsPassiveEvents ? { passive: true } : false;
-
 //  Focuses the root element.
 export function focusRoot () {
   let e;