cc @jorisre

fixes types as part of #12638

Why

• Using ExtractTransformedValues<> from (typeof props)['resolver'] does not work because within the implementation signature, the value in typeof props does not capture any specific type information that is not a part of the useForm function’s generic type parameters.
• Since useForm is only generic over TFieldValues/TContext/TTransformedValues, there is no type information to be gained from (typeof props)['resolver'] because the compiler will never see the type (typeof props)['resolver'] as anything more specific than Resolver<TFieldValues, TContext, TTransformedValues>.
• Therefore, we should just use TTransformedValues
  • The compiler already checks that the type of resolver matches TTransformedValues
  • moreover, the compiler can already infer the type of TTransformedValues based on the type of props.resolver, without using the broken ExtractTransformedValues type helper

Effect

This PR fixes the broken types in the handleSubmit tests in react-hook-form/resolvers#753

Before, form is erroneously inferred with a TTransformedValues parameter of any, and the test fails

After, form infers the correct type for TTransformedValues and there is no type error; the test passes