Remove the claim property key from the approval response

[sadilchamishka]

Purpose

$subject

Related Issues

• Approval V2 implementation to preserve the backward compatibility of the approval V1 API wso2/product-is#25975

[wso2-engineering]

AI Agent Log Improvement Checklist

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Comment	Accepted (Y/N)	Reason
#### Log Improvement Suggestion No: 1

[Copilot]

Pull Request Overview

This PR removes the claim property key from workflow approval responses to avoid duplication of claim information. The change ensures that when individual claims are added as separate parameters to the workflow request properties, the full claim list parameter is skipped to prevent redundancy.

• Adds a constant for the "Claims" parameter name for consistency
• Implements logic to skip adding the full claims parameter when individual claims have already been processed

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