fix: [SRTP-190] fix openapi error response descriptions for activation api

[fmuscianisi]

Description

Aligned non checked error responses in RTP activation OpenAPI descriptor to match Spring Boot generic error response.

List of Changes

• Example error responses and labels in OpenPAI descriptor of RTP activation;
• Catch WebExchangeBindException to abide by BAD REQUEST response body already in place.

Motivation and Context

Resolve aligning issues between activation API description and implementation.

How Has This Been Tested?

• Pre-Deploy Test
  • Unit
  • Integration (Narrow)
• Post-Deploy Test
  • Isolated Microservice
  • Broader Integration
  • Acceptance
  • Performance & Load

Types of changes

• PATCH - Bug fix (backwards compatible bug fixes)
• MINOR - New feature (add functionality in a backwards compatible manner)
• MAJOR - Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud