url available on MediaImage.originalSource GraphQL field
API
Effective July 14, 2023
As of API version 2023-10, url field is available on the GraphQL MediaImage's originalSource field https://shopify.dev/docs/api/admin-graphql/2023-07/objects/mediaimage#field-mediaimage-originalsource.
This will be a signed URL that is valid only for a short period of time. It provides access to the originally uploaded uncompressed image.