Deprecation Guide for Optional Feature: template-only-glimmer-components

Setting the template-only-glimmer-components optional feature to false has been deprecated. You must set this feature to true, enabling the template-only Glimmer components. For more details on this optional feature, including the changes in behavior enabling it causes and how you can enable it, see the optional features section of the Ember guides. You can also run npx @ember/octanify to set this feature to the correct value.