fix: minor address form issues

[SGrueber]

PR Type

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no API changes)
[ ] Build-related changes
[ ] CI-related changes
[ ] Documentation content changes
[ ] Application / infrastructure changes
[ ] Other:

What Is the Current Behavior?

There are 2 minor issues regarding the address form:

1. If the user clicks the edit address icon on the myAccount address page and the countries are not in the store yet, the country of the address is missing in the prefilled address form.
2. If the user updates an invoice or shipping address on the checkout address page and clicks the 'Add Address' link afterwards the edited address is shown in the address form instead of an empty form.

Issue Number: Closes #

What Is the New Behavior?

These issues have been fixed.

Does this PR Introduce a Breaking Change?

[ ] Yes
[x] No

Other Information

AB#87322