fix(webpush): load user in push sub query (#1894)

Co-authored-by: sct <ryan@sct.dev>

server/lib/notifications/agents/webpush.ts

@@ -190,6 +190,7 @@ class WebPushAgent
 
       const allSubs = await userPushSubRepository
         .createQueryBuilder('pushSub')
+        .leftJoinAndSelect('pushSub.user', 'user')
         .where('pushSub.userId IN (:users)', {
           users: manageUsers.map((user) => user.id),
         })