[Bug]: ZodFormattedError type breaks for ReadonlyArrays.

[Ben-at-Catalyst]

The following TypeScript code gives a compiler error:

    type Foo = {
      ids: ReadonlyArray<string>;
    };

    const error: ZodFormattedError<Foo> = {
      _errors: [],
      ids: { _errors: [] },
    };

The error:

[Filename]: error TS2322: Type '{ _errors: never[]; }' is not assignable to type 'ZodFormattedError<readonly string[], string>'.
  Type '{ _errors: never[]; }' is missing the following properties from type 'readonly ({ _errors: string[]; } | undefined)[]': length, concat, join, slice, and 26 more.

85       ids: { _errors: [] },
         ~~~

[Filename]:
    80       ids: ReadonlyArray<string>;
             ~~~
    The expected type comes from property 'ids' which is declared here on type 'ZodFormattedError<Foo>'

The weird thing is if I change my type Foo to use an Array instead of a ReadonlyArray the error goes away. This works:

    type Foo = {
      ids: Array<string>;
    };

    const error: ZodFormattedError<Foo> = {
      _errors: [],
      ids: { _errors: [] },
    };