Support for latest ember-intl addon version

[chrc]

I want to use ember-intl addon.

"dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-intl": "5.3.0",
    "ember-data": "3.18.0"
  }

Wrote en-us translations file, but I have an error:
WARNING: [ember-intl] translation: "foo" on locale: "en-us" was not found.

Thank