Update release date in CHANGELOG (#47325)

Updated the release date for version 1.17.0 and clarified breaking changes related to metric reporting.

Author: needuv

sdk/evaluation/azure-ai-evaluation/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.17.0 (2026-05-26)
+## 1.17.0 (2026-06-03)
 
 ### Breaking Changes