fix(event_handler): Preserve examples field in OpenAPI schema for BedrockAgentResolver

[leandrodamascena]

Issue number: closes #7543

Summary

Changes

This PR removes the transformation that was incorrectly converting examples to example in response definitions. The OpenAPI spec supports both examples (multiple) and example (single) in the OpenAPI 3.0 schema, and users should be able to use either format as intended.

User experience

Please share what the user experience looks like before and after this change

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.49%. Comparing base (ff994b5) to head (5a85aa3).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7561      +/-   ##
===========================================
+ Coverage    96.45%   96.49%   +0.03%     
===========================================
  Files          275      275              
  Lines        13115    13110       -5     
  Branches       987      985       -2     
===========================================
  Hits         12650    12650              
+ Misses         360      356       -4     
+ Partials       105      104       -1     

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[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