fix: handle change on country selection

[Suman085]

The onChange does not trigger when country is updated which is unexpected
The didChange was not called because of which the form was on a bad state

fix: handle change on country selection

[Suman085]

@cedvdb #240

[cedvdb]

Thanks, for your first contribution.

Could you

• update the changelog to add an entry this bug was fixed
• add a test so this doesn't break in the future.

[Suman085]

Thanks, for your first contribution.

Could you

• update the changelog to add an entry this bug was fixed
• add a test so this doesn't break in the future.

Awesome package though!!! Lemme know if this needs changes