## Description
This PR resolves an issue that was causing Zimbabwe country being
selected in the Contacts list.
The root cause is objects in `countries.json` file are missing the
`code` property which was causing the countries map to always have the
last country in the list also map to an `undefined` key. In turn, this
was causing an error when contact's `country` was undefined.
Additional thing to keep in mind: I am not sure if there is a case when
contact's `country` property is used or if it can be removed as well,
but in my Chatwoot installation contacts only have a `countryCode`
property, and there is no way to set `country` from the widget sdk.
Fixes#7822
## Type of change
- [x] Bug fix (non-breaking change which fixes an issue)
## How Has This Been Tested?
Simply running the vue application locally targeting my live chatwoot
API.
## Checklist:
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [x] Any dependent changes have been merged and published in downstream
modules
