fix mention turns into unknown in community (#15285)

src/status_im/multiaccounts/core.cljs

@@ -25,7 +25,7 @@
 
 (defn displayed-name
   "Use preferred name, display-name, name or alias in that order"
-  [{:keys [name display-name preferred-name alias public-key ens-verified]}]
+  [{:keys [name display-name preferred-name alias public-key ens-verified primary-name]}]
   (let [display-name (if (string/blank? display-name) nil display-name)
         ens-name     (or preferred-name
                          display-name
@@ -33,7 +33,7 @@
     ;; Preferred name is our own otherwise we make sure it's verified
     (if (or preferred-name (and ens-verified name))
       ens-name
-      (or display-name alias (gfycat/generate-gfy public-key)))))
+      (or display-name primary-name alias (gfycat/generate-gfy public-key)))))
 
 (defn contact-by-identity
   [contacts identity]

src/status_im/ui/screens/chat/components/input.cljs

@@ -217,11 +217,13 @@
         all-contacts         (:contacts/contacts db)
         chat                 (get-in db [:chats chat-id])
         current-multiaccount (:multiaccount db)
+        community-members    (when (= (:chat-type chat) chat.constants/community-chat-type)
+                               (get-in db [:communities (:community-id chat) :members]))
         mentionable-users    (mentions/get-mentionable-users
                               chat
                               all-contacts
                               current-multiaccount
-                              nil)
+                              community-members)
         hydrated-mentions    (map
                               (fn [[t mention :as e]]
                                 (if (= t :mention)