[SCF-2416] [Part 1] Drop Ember 3.28 and 4.4, bump to 5.0.0 - #16

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

The this.set() method is a classic ember object method, and can't be used in octane classes. You can refactor this usage to use a utility version instead (e.g. get(this, 'foo')), or to use native/modern syntax instead. Alternatively, you can add the @classic decorator to this class to continue using classic APIs

Don't use observers

The this.set() method is a classic ember object method, and can't be used in octane classes. You can refactor this usage to use a utility version instead (e.g. get(this, 'foo')), or to use native/modern syntax instead. Alternatively, you can add the @classic decorator to this class to continue using classic APIs

The this.set() method is a classic ember object method, and can't be used in octane classes. You can refactor this usage to use a utility version instead (e.g. get(this, 'foo')), or to use native/modern syntax instead. Alternatively, you can add the @classic decorator to this class to continue using classic APIs

Don't use observers

Don't use computed properties with native classes. Use getters or @Tracked properties instead

Don't use a mixin

Use Glimmer components(@glimmer/component) instead of classic components(@ember/component)

Don't use computed properties with native classes. Use getters or @Tracked properties instead

Don't use computed properties with native classes. Use getters or @Tracked properties instead