[BUG] nullable is reversed on json type

[ygreenb]

Describe the bug
In Prisma schema, I defined a field as a Json nullable type, but the generated result from Zod is not nullable.

Screenshots

column is not nullable in prisma schema, but the generated type is not nullable

schema.prisma

model User {
  name String?
  bio  Json?
}

then run prisma migrate dev

prisma/generated/zod/index.ts

export const UserSchema = z.object({
  name: z.string().nullable(),
  bio: JsonValueSchema,
})

column is nullable in prisma schema, but the generated type is nullable

schema.prisma

model User {
  name String
  bio  Json
}

then run prisma migrate dev

prisma/generated/zod/index.ts

export const UserSchema = z.object({
  name: z.string(),
  bio: JsonValueSchema.nullable(),
})

Package versions (please complete the following information):

• zod: 3.21.4
• prisma: 5.1.1
• zod-prisma-types: 3.1.6

Additional context
Add any other context about the problem here.