titlesToBeSold.registerExtract.ocSummaryData.propertyAddress should be an array

[jacknely]

This needs to be an array as some title responses have more than one addressLine objects:

example:
[{“postcodeZone”: {“postcode”: “M40 9PL”}, {'addressLine': {'line': ['2 William Prance Road']}}, {'addressLine': {'line': ['bin store']}}]

The XML to JSON library that we use correctly parses this to an array but I'm ok with adding some custom logic to concat all addressLine objects to one if we want maintain true backwards compatibility with schema.

https://github.com/Property-Data-Trust-Framework/schemas/blob/ff9eaa88b75338e165cda2b5d911302c3c532ec3/src/schemas/v3/pdtf-transaction.json#L25666