[PRMP-1446] Add healthcare worker API URL to Lambda environment

[NogaNHS]

Overview

Jira ticket: PRMP-1446

Description

This update adds the healthcare worker API URL to the environment variables of the user restriction Lambda function, ensuring the Lambda has the necessary configuration to interact with the healthcare worker API.

Context

This change is required to support integration with the healthcare worker API.

Checklist

Tasks for all changes:

• 1. I have linked this PR to its Jira ticket.
• 2. I have run git pre-commits.
• 3. I have updated relevant documentation.
• 4. I have considered the cross-team impact (and have PR approval from both Core & Demographics if necessary).
• 5. I have successfully deployed this change to a sandbox and witnessed it build: Workflow run: TBC
• 6. I have checked the Terraform Plan from this PR against ndr-dev.