Use hreflangCode() helper in tests instead of inline 'no'→'nb' mapping

[Copilot]

Three tests in news-generation-e2e.test.ts duplicated the Norwegian BCP-47 mapping inline (lang === 'no' ? 'nb' : lang) instead of using the shared hreflangCode() helper that production code already relies on.

Changes

• tests/pipeline/news-generation-e2e.test.ts
  • Import hreflangCode from scripts/article-template/helpers.js
  • Replace all three inline ternaries with hreflangCode(lang) in the lang attribute, inLanguage JSON-LD, and hreflang tag consistency tests

-const expectedLangTag = lang === 'no' ? 'nb' : lang;
+const expectedLangTag = hreflangCode(lang);

-const expectedLang = lang === 'no' ? 'nb' : lang;
+const expectedLang = hreflangCode(lang);

-const expectedHreflang = lang === 'no' ? 'nb' : lang;
+const expectedHreflang = hreflangCode(lang);

Any future addition to hreflangCode() (e.g. a new language alias) now propagates to the tests automatically.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.