Improvements to shadow muting (#15543)

* fix test wording

* make shadow mute work for dms

* shadow mute chat messages

* shadow mute invites

* oops

* refactor mute handling into middleware

* correctly throw error

* fix

* test(chat): expect errors when muted
Also fixes the Linux version in the mongo commands. Again. wtf

---------

Co-authored-by: Kalista Payne <kalista@habitica.com>

website/server/middlewares/auth.js

@@ -145,3 +145,15 @@ export function authWithSession (req, res, next) {
     })
     .catch(next);
 }
+
+export function chatPrivilegesRequired () {
+  return function chatPrivilegesRequiredHandler (req, res, next) {
+    const { user } = res.locals;
+
+    if (user.flags.chatRevoked) {
+      throw new NotAuthorized(res.t('chatPrivilegesRevoked'));
+    }
+
+    return next();
+  };
+}