fix: add path to error when list has too many or few items

[josh-barker]

This PR adds the resource path to error messages when a list type either has too many or too few elements.

[hashicorp-cla]

All committers have signed the CLA.

[bflad]

Hi @josh-barker 👋 Thank you for submitting this and apologies for the delayed review.

This partially relates to some of the discussion in hashicorp/terraform#31575, so therefore I think this adjustment is acceptable because even if Terraform added the attribute path information to the diagnostic output, it would only show up in newer versions of Terraform while this would cover all cases of Terraform 0.12 and later when providers update their SDK version to one containing this change.

Would you be able to rebase this and ensure the unit testing is passing? Once that is done, we can get this in. Thanks again.

[bflad]

Looks good to me 🚀 Thanks so much, @josh-barker

[josh-barker]

You're welcome @bflad ! 🙂

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