Enable views_ui by default, to help tests pass.

lib/Drupal/views/Tests/AccessTest.php

lib/Drupal/views/Tests/Field/ApiDataTest.php

lib/Drupal/views/Tests/Field/ApiTestBase.php

lib/Drupal/views/Tests/Field/HandlerFieldFieldTest.php

lib/Drupal/views/Tests/Handler/FilterDateTest.php

lib/Drupal/views/Tests/TranslatableTest.php

lib/Drupal/views/Tests/UiGroupByTest.php

lib/Drupal/views/Tests/UiSettingsTest.php

lib/Drupal/views/Tests/ViewsSqlTest.php

lib/Drupal/views/Tests/ViewsTestBase.php