2.2.2 breaks enums in GTS files

First mentioned here https://github.com/emberjs/babel-plugin-ember-template-compilation/issues/38#issuecomment-2384709391

If an enum is defined and used in a component (within the same file)

```ts
// app/components/alert.gts
export enum AlertType {
Information = 'information',
Warning = 'warning',
Critical = 'critical',
Success = 'success',
NewFeature = 'new-feature',
}

export component Alert: TOC =
{{#if (eq @type AlertType.Warning)}}
...
{{else if ...}}
...
{{/if}}

```

produces runtime error
```
Uncaught (in promise) Error: Attempted to resolve a value in a strict mode template, but that value was not in scope: AlertType
```

However it will work if any of these changes are made;
* if the enum is defined in some other file and imported in
* if the enum is set as a property in the component, and that is used in the template