[Fix] extensions/importType: fix isScoped treating @/abc as scoped module

[rperello]

Closes #2145

[ykzts]

@ljharb With this change, @/pages (used in Next.js and Nuxt.js), which used to be treated as internal, is now recognized as unknown. Is it intentional that such a disruptive change is included in a minor version upgrade?

[ljharb]

Yes, because it was a bug that it was treated as a valid package name in the first place. You can configure it with an import resolver.

[ykzts]

Hmm. import/order asks for the import type by value without resolver, so values like @/pages are always unknown. Is this not fixed in the eslint-plugin-import spec?

[ljharb]

You’re right, that seems like a bug in the order rule - it should probably use the resolver to get the type. Can you file a new issue for that?

[ykzts]

Thank you very much. I created #2249.