PRL-4981 - Added a new key & parsing for temp party names for hearing data

[channa-patil]

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• commit messages are meaningful and follow good commit message guidelines
• README and other documentation has been updated / added (if needed)
• tests have been updated / new tests has been added (if needed)
• the enable_keep_helm label has been added, if the helm release should be persisted after a successful build

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JIRA link (if applicable)

https://tools.hmcts.net/jira/browse/PRL-4981

Change description

Does this PR introduce a breaking change? (check one with "x")

[ ] Yes
[x] No