chore: rework the language audits for build (#42510)

This also reverts commit cd5c28b332.

utils/is-audited.js

@@ -0,0 +1,20 @@
+// this can go once all certs have been audited.
+
+// Currently the auditing is going through Crowdin, so once a cert has been 100%
+// proofread, we can add it in here. That means that translations can come
+// through from Crowdin whenever they are done, but we don't show them on the
+// client until we decide the entire cert is ready.
+
+// NOTE: certificates themselves (.yml files) are not currently being
+// translated, but when they are they can be included by adding 'certificates'
+// to the arrays below
+
+const { auditedCerts } = require('../config/i18n/all-langs');
+
+function isAuditedCert(lang, cert) {
+  if (!lang || !cert)
+    throw Error('Both arguments must be provided for auditing');
+  return lang === 'english' || auditedCerts[lang].includes(cert);
+}
+
+exports.isAuditedCert = isAuditedCert;