TBBETA-2435 Fix clinic attribute 'cityName' -> 'city'

[jaro-m]

Added tests for the change, and some other ones
to improve code coverage.
Fixed statistics for applications.

1. What type of PR is this? (check all applicable)

• Feature
• Hotfix
• Release
• Other:

2. What areas of the service does it affect? (check all applicable)

• UI
• Backend
• Infrastructure
• CI/CD
• Other:

3. Briefly describe the main changes in this PR

4. Checklist

• Title of this PR includes jira ticket number or release version
• Code compiles and runs correctly
• All tests pass
• Test coverage is >90%
• Documentation updated if applicable
• Accessibility requirements satisfied if applicable

[sonarqubecloud]

Quality Gate passed for 'ukhsa-internal_pre-entry-tb-screening-app'

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