[DT-2775] Improve Data Submission Error Messaging

[kevinmarete]

Addresses

https://broadworkbench.atlassian.net/browse/DT-2775

Summary

This PR improves submission validation errors by formatting the backend's formatting errors implemented here, so users can easily understand what’s missing and where to fix it.

After.mov

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• Label PR with a Jira ticket number and include a link to the ticket
• Label PR with a security risk modifier [no, low, medium, high]
• PR describes scope of changes
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• Verify all tests go green
• Test this change deployed correctly and works on dev environment after deployment

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarQube Cloud