fix(authentication): Fix issues when users try to logout (#603)

Run set last login information action only when the user exist. Thus preventing running it after the logout method, which was causing an error

app/controllers/concerns/authentication.rb

@@ -3,7 +3,7 @@ module Authentication
 
   included do
     before_action :authenticate_user!
-    after_action :set_last_login_at
+    after_action :set_last_login_at, if: -> { Current.user }
   end
 
   class_methods do

test/application_system_test_case.rb

@@ -12,6 +12,9 @@ class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
       fill_in "Password", with: "password"
       click_button "Log in"
     end
-    assert_text "Dashboard"
+    assert_text "Dashboard", wait: 5
+    find('[data-controller="menu"]').click
+    click_button "Logout"
+    assert_text "Sign in to your account"
   end
 end