Using validationSchemaExportType const with zod errors out due to ordering

[mdnorman]

I don't have any recursive types, so I'm trying to use the const export type. Because there's no guarantee to the order the types are generated in, some of the types are generated out of order, causing build issues.

[Code-Hex]

Fixed in #1423. Const schema output is covered by dependency ordering tests so referenced schemas are emitted before dependents.