Update changelog and add documentation for evaluate_query parameter refactoring

Co-authored-by: slister1001 <[email protected]>

Author: Copilot

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

@@ -6,6 +6,7 @@
 - Added `_evaluate_query` parameter to `RaiServiceEvaluatorBase` class with a default value of `False`. This parameter controls whether queries are included in evaluation data when evaluating query-response pairs. Previously, queries were always included in evaluations. Existing code that relies on queries being evaluated will need to explicitly set `_evaluate_query=True` to maintain the previous behavior.
 
 ### Features Added
+- Made `_evaluate_query` parameter public as `evaluate_query` across all RAI service evaluators. The old `_evaluate_query` parameter is still supported but deprecated with a warning. Users should use `evaluate_query` instead of the private `_evaluate_query` parameter.
 
 ### Bugs Fixed