UX: Do not display non-human users on group page.

https://meta.discourse.org/t/members-of-groups-staff/71437

app/controllers/groups_controller.rb

@@ -125,15 +125,17 @@ class GroupsController < ApplicationController
       order = "#{params[:order]} #{dir} NULLS LAST"
     end
 
-    total = group.users.count
-    members = group.users
+    users = group.users.human_users
+
+    total = users.count
+    members = users
       .order('NOT group_users.owner')
       .order(order)
       .order(username_lower: dir)
       .limit(limit)
       .offset(offset)
 
-    owners = group.users
+    owners = users
       .order(order)
       .order(username_lower: dir)
       .where('group_users.owner')

spec/requests/groups_controller_spec.rb

@@ -183,7 +183,9 @@ describe GroupsController do
       )
     end
 
-    let(:group) { Fabricate(:group, users: [user1, user2, user3]) }
+    let(:bot) { Fabricate(:user, id: -999) }
+
+    let(:group) { Fabricate(:group, users: [user1, user2, user3, bot]) }
 
     it "should allow members to be sorted by" do
       get "/groups/#{group.name}/members.json", params: {