2025-05-15-preview Entitysynonym bug fix

[quentinRobinson]

Data Plane API Specification Update Pull Request

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API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
TypeSpec	Language.Text
Swagger	AnomalyDetector-Language

[yangyuan]

Approved to unblock codeowner approval. No review needed.