Type errors in generated code when nested input objects have oneOf directive

[hedgepigdaniel]

Describe the bug

input Option @oneOf {
    field: String
}

input Options {
    option: Option
}

Since #180, the generation for the Option type (which itself has the @oneOf directive) works correctly. However, generation for the Options type (which does not have the @oneOf directive, but has a field who's type does) produces incorrect code with type errors when the terminateCircularRelationships: 'immediate' option is used.

What it produces is something like this:

export const anOptionsInput = (overrides?: Partial<OptionsInput>, _relationshipsToOmit: Set<string> = new Set()): OptionsInput=> {
    const relationshipsToOmit: Set<string> = _relationshipsToOmit;
    relationshipsToOmit.add('OptionsInput');
    return {
        option: overrides && overrides.hasOwnProperty('option') ? overrides.option! : relationshipsToOmit.has('Option') ? {} as Option: anOption({}, relationshipsToOmit),
    };
};

anOption({}, relationshipsToOmit) produces a type error, because Option requires one of it's fields to be set. At although {} as Option doesn't produce a type error because of the cast, it is incorrect for the same reason.

Your Example Website or App

No response

Steps to Reproduce the Bug or Issue

terminateCircularRelationships: 'immediate', schema as in description. Note that generated code has type errors.

Expected behavior

No type errors, correct code.

Screenshots or Videos

No response

Platform

• graphql-codegen-typescript-mock-data version(s): [e.g. 5.0.1]

Codegen Config File

terminateCircularRelationships: 'immediate'

Additional context

No response