Improve TypeError exception message if validation schema is passed as plain object

[ProteanCode]

🚀 Feature request

Current Behavior

Currently if we pass a simple object as validation object, ie.

{ name: Yup.string().required(), data: { age: Yup.number() } }

We get an error

formik.esm.js:1178 Uncaught TypeError: schema[(intermediate value)(intermediate value)(intermediate value)] is not a function at validateYupSchema (formik.esm.js:1178)

Desired Behavior

A more clear error like Passed validationSchema is not a valid Yup object

[github-actions[bot]]

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[Derewith]

Reopen this as it's still happening

[timgivois]

I'm also incurring in this issue

[Lonolf]

Same for me: I lost half an hour searching why it was not validating my input