DF-990: Update GeospatialFieldComponent to support multiple countries

[davidjamesstone]

https://eaflood.atlassian.net/browse/DF-990

Change GeospatialField options from:

{
  options: {
    country: 'england' | 'wales' | 'northern-ireland' | 'scotland'
  }
}

to

{
  options: {
    countries: ('england' | 'wales' | 'northern-ireland' | 'scotland')[]
  }
}

In case we need to support multiple countries in the future

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🧪 Acceptance Test Results

❌ Some acceptance tests failed

View Details