Fix/ctc 75/remove duplicate units for legacy

[benprotheroe]

Description

Music year: 1957

• List of changes
  DO NOT MERGE WITH MAIN

Issue(s)

Fixes #

How to test

1. Go to {owa_deployment_url}
2. Click on ______
3. You should see ______

Screenshots

How it used to look (delete if n/a):
{screenshots}

How it should now look:
{screenshots}

Checklist

• Added or updated tests where appropriate
• Manually tested across browsers / devices
• Considered impact on accessibility
• Design sign-off
• Approved by product owner
• Does this PR update a package with a breaking change

[sonarqubecloud]

Quality Gate passed

Issues
8 New issues
0 Accepted issues

Measures
0 Security Hotspots
88.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud