- Adds a non‑null Boolean `translatable` field to the Metafield object in GraphQL Admin API version 2026‑10
- Deprecates the use of `TranslatableResourceType.METAFIELD` enum; apps should read `metafield.translatable` directly
- No breaking impact for pre‑2026‑10 versions; only apps querying translatable metafields need to update when upgrading