chore: Use full name in activity message, fix specs (#1339)

app/javascript/dashboard/components/widgets/conversation/Message.vue

@@ -41,7 +41,7 @@
           size="16px"
         />
         <div class="sender--available-name">
-          {{ sender.available_name || sender.name }}
+          {{ sender.name }}
         </div>
       </div>
     </div>
@@ -121,7 +121,7 @@ export default {
 
       return this.data.message_type === 1 && !this.isHovered && sender
         ? {
-            content: `Sent by: ${sender.available_name || sender.name}`,
+            content: `Sent by: ${sender.name}`,
             classes: 'top',
           }
         : false;

app/models/conversation.rb

@@ -214,7 +214,7 @@ class Conversation < ApplicationRecord
   end
 
   def create_assignee_change(user_name)
-    params = { assignee_name: assignee&.available_name, user_name: user_name }.compact
+    params = { assignee_name: assignee.name, user_name: user_name }.compact
     key = assignee_id ? 'assigned' : 'removed'
     key = 'self_assigned' if self_assign? assignee_id
     content = I18n.t("conversations.activity.assignee.#{key}", **params)