Fix/postcode lookup repeater

[davidjamesstone]

Proposed change

Adds support for mini-journey data payload for repeaters.

Adds a hr delimiter to the postcode lookup field when:

• it's the last component on the page and
• it doesn't yet have a value

This is to avoid there being too many buttons together (Continue, Save and Exit, Find addess) like in this first screenshot:

No hr when amongst other components:

No hr once an address has been selected:

hr included when it's the last component amongst other components:

hr included when it's the only component on the page:

Jira ticket:

Type of change

• Bug fix
• New feature
• Breaking change
• Misc. (documentation, build updates, etc)

Checklist

• You have executed this code locally and it performs as expected.
• You have added tests to verify your code works.
• You have added code comments and JSDoc, where appropriate.
• There is no commented-out code.
• You have added developer docs in README.md and docs/* (where appropriate, e.g. new features).
• The tests are passing (npm run test).
• The linting checks are passing (npm run lint).
• The code has been formatted (npm run format).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud