Yup DateRange conditional validation

[bjnewman]

🐛 Bug report

Current Behavior

dateRange.when() conditional validations throw errors after upgrading yup to v0.32.11 and availity/yup to v4.0.0

see for example this partial schema that worked with availity/yup v3.1.1 and yup v0.29.3

will now throw an error that looks like

which I believe is due to this.format being undefined in the conditional validation so that getValidDate fails

as seen here

Expected behavior

This example test added to dateRange.test.js should pass and we should be able to continue validating dateRanges conditionally

Reproducible example

See test above

Suggested solution(s)

Working on it

Additional context

I already pinged Chris and Jordan about this and I have a bit of time to look into this more today and tomorrow so will update this issue if I find out anything useful.

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