Add member table username helper

spec/features/projects/members/list_spec.rb

@@ -110,7 +110,7 @@ RSpec.describe 'Project members list' do
       it 'does not show form used to change roles and "Expiration date" or the remove user button' do
         visit_members_page
 
-        page.within find_member_row(project_bot) do
+        page.within find_username_row(project_bot) do
           expect(page).not_to have_button('Maintainer')
           expect(page).to have_field('Expiration date', disabled: true)
           expect(page).not_to have_button('Remove member')

spec/support/helpers/features/members_table_helpers.rb

@@ -41,6 +41,10 @@ module Spec
             find_row(user.name)
           end
 
+          def find_username_row(user)
+            find_row(user.username)
+          end
+
           def find_invited_member_row(email)
             find_row(email)
           end