yup InferType works wrong with optional fields

[Faraz1995]

Describe the bug
i define schema with an optional field

` export const schema = yup.object({
aiModel: yup.string().required(),
questionFile: yup.mixed().optional(),
})

export type PriceCalculatorForm = yup.InferType`

but questionFile in PriceCalculatorForm type is not optional

here error on resolver

Type 'Resolver<{ aiModel: string; questionFile: File | undefined; }, any, { questionFile?: File | undefined; aiModel: string; }>' is not assignable to type 'Resolver<{ questionFile?: File | undefined; aiModel: string; }, any, { questionFile?: File | undefined; aiModel: string; }>'.
Types of parameters 'values' and 'values' are incompatible.
Type '{ questionFile?: File | undefined; aiModel: string; }' is not assignable to type '{aiModel: string; questionFile: File | undefined; }'.
Property 'questionFile' is optional in type '{ questionFile?: File | undefined; aiModel: string; }' but required in type '{ aiModel: string; questionFile: File | undefined; }'.

yup version 1.7.1

[jaredgreen]

Same issue. Any schema with an optional() I am unable to create valid matching type for the resolver whether via yup.InferType or by manually writing it.