Update custom emoji policy

app/policies/custom_emoji_policy.rb

@@ -9,7 +9,7 @@ class CustomEmojiPolicy < BasePolicy
     enable :delete_custom_emoji
   end
 
-  rule { author & can?(:developer_access) }.policy do
+  rule { author & can?(:create_custom_emoji) }.policy do
     enable :delete_custom_emoji
   end
 end

app/policies/group_policy.rb

@@ -89,6 +89,7 @@ class GroupPolicy < BasePolicy
   rule { guest }.policy do
     enable :read_group
     enable :upload_file
+    enable :guest_access
   end
 
   rule { admin }.policy do
@@ -178,6 +179,7 @@ class GroupPolicy < BasePolicy
     enable :update_default_branch_protection
     enable :create_deploy_token
     enable :destroy_deploy_token
+    enable :owner_access
   end
 
   rule { can?(:read_nested_project_resources) }.policy do

spec/policies/custom_emoji_policy_spec.rb

@@ -58,6 +58,16 @@ RSpec.describe CustomEmojiPolicy do
           expect_allowed(*custom_emoji_permissions)
         end
       end
+
+      context 'is emoji creator but not a member of the group' do
+        before do
+          custom_emoji.update_attribute(:creator, user)
+        end
+
+        it do
+          expect_disallowed(*custom_emoji_permissions)
+        end
+      end
     end
   end
 end