Groundedness - Correct prompty in runtime (fixes using evaluate function) (#43357)

* check for correct prompty in kwargs

* dummy commit

* Revert "dummy commit"

This reverts commit 372c448.

Author: ahibrahimm

sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_evaluators/_groundedness/_groundedness.py

@@ -202,18 +202,24 @@ def __call__(  # pylint: disable=docstring-missing-param
         """
 
         if kwargs.get("query", None):
-            current_dir = os.path.dirname(__file__)
-            prompty_path = os.path.join(current_dir, self._PROMPTY_FILE_WITH_QUERY)
-            self._prompty_file = prompty_path
-            prompty_model_config = construct_prompty_model_config(
-                validate_model_config(self._model_config),
-                self._DEFAULT_OPEN_API_VERSION,
-                UserAgentSingleton().value,
-            )
-            self._flow = AsyncPrompty.load(source=self._prompty_file, model=prompty_model_config)
+            self._ensure_query_prompty_loaded()
 
         return super().__call__(*args, **kwargs)
 
+    def _ensure_query_prompty_loaded(self):
+        """Switch to the query prompty file if not already loaded."""
+
+        current_dir = os.path.dirname(__file__)
+        prompty_path = os.path.join(current_dir, self._PROMPTY_FILE_WITH_QUERY)
+
+        self._prompty_file = prompty_path
+        prompty_model_config = construct_prompty_model_config(
+            validate_model_config(self._model_config),
+            self._DEFAULT_OPEN_API_VERSION,
+            UserAgentSingleton().value,
+        )
+        self._flow = AsyncPrompty.load(source=self._prompty_file, model=prompty_model_config)
+
     def _has_context(self, eval_input: dict) -> bool:
         """
         Return True if eval_input contains a non-empty 'context' field.
@@ -279,6 +285,9 @@ def _convert_kwargs_to_eval_input(self, **kwargs):
         response = kwargs.get("response")
         tool_definitions = kwargs.get("tool_definitions")
 
+        if query and self._prompty_file != self._PROMPTY_FILE_WITH_QUERY:
+            self._ensure_query_prompty_loaded()
+
         if (not query) or (not response):  # or not tool_definitions:
             msg = f"{type(self).__name__}: Either 'conversation' or individual inputs must be provided. For Agent groundedness 'query' and 'response' are required."
             raise EvaluationException(