Description

When WordPress runs with all intermediate image sizes disabled (policy on WordPress VIP), WPGraphQL exposes MediaItemSizeEnum with zero values. This produces an invalid GraphQL schema and breaks tools that consume introspection (e.g., graphql-codegen) with:
Enum type MediaItemSizeEnum must define one or more values.
Older WPGraphQL bundled with VIP included fallbacks so the enum wasn’t empty; newer standalone builds appear to have removed that behavior.

Steps to reproduce

Run WP with no intermediate sizes (e.g., remove/disable all registered sizes so get_intermediate_image_sizes() returns []). On VIP this is default policy.

Install/activate standalone WPGraphQL (recent release).

Introspect schema or hit /graphql and inspect MediaItemSizeEnum.

Run any codegen/validation on the schema.

Additional context

No response

WPGraphQL Version

2.3.6

WordPress Version

6.8.3

PHP Version

8.2

Additional environment details

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have disabled ALL plugins except for WPGraphQL.

• Yes
• My issue is with compatibility with a specific WordPress plugin, and I have listed all my installed plugins (and version info) above.