Increase Capybara default wait time to 10s for system tests

Helps with flaky CI failures where the default 2s isn't enough for
slow containers.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nbudin

test/application_system_test_case.rb

@@ -1,8 +1,11 @@
+# frozen_string_literal: true
 require "test_helper"
 
 class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
   include Devise::Test::IntegrationHelpers
 
+  Capybara.default_max_wait_time = 10
+
   driven_by :cuprite,
             screen_size: [1200, 800],
             options: {