grouped exposed taxonomy filters return invalid when a valid entity is present

When creating exposed grouped filters in a view, if a group is named and a taxonomy term is added that exists in the system, the form throws the error:

The value is required if title for this item is defined.

Label and term are added

Error

To reproduce

1. create a tag if none exists
2. create a view
3. create a taxonomy filter
4. set the filter to exposed
5. set the exposed filter to grouped
6. Type a label for a group
7. type the name of the tag you created
8. submit

This was also tested with the patch from #1810148: Grouped exposed taxonomy term filters do not work grouped_exposed-1810148-49.patch applied and failed in the same way.

There is also a nomenclature issue in that "title" in the error refers to fields in the column "label." One or the other needs to change.