Group Validation issue -- invalid when group is removed

[abrin]

Describe the bug Apologies if this is user-error somehow. But, if a user adds a new group and then removes it, the validation status for the form isn't updated properly.

To Reproduce Steps to reproduce the behavior:

1. https://codesandbox.io/s/object-options-passing-vzfsw?file=/src/App.vue
2. add a value in each of the fields
3. click the "request another image" button to add another row
4. delete the empty row
5. note the isValid is false even though the validation rules state that it's valid

Expected behavior I would expect that the removal of the group would trigger the validation to be reviewed and the form would become valid again

Tested with 2.5.2

[justin-schroeder]

Thanks for the report, we'll try to resolve this in 3