chore: rename to validation_exception_handler

Author: heitorlessa

aws_lambda_powertools/utilities/feature_flags/feature_flags.py

@@ -391,7 +391,7 @@ def get_enabled_features(self, *, context: Optional[Dict[str, Any]] = None) -> L
 
         return features_enabled
 
-    def exception_handler(self, exc_class: Exception | list[Exception]):
+    def validation_exception_handler(self, exc_class: Exception | list[Exception]):
         """Registers function to handle unexpected exceptions when evaluating flags.
 
         It does not override the function of a default flag value in case of network and IAM permissions.
@@ -408,7 +408,7 @@ def exception_handler(self, exc_class: Exception | list[Exception]):
         ```python
         feature_flags = FeatureFlags(store=app_config)
 
-        @feature_flags.exception_handler(Exception)  # any exception
+        @feature_flags.validation_exception_handler(Exception)  # any exception
         def catch_exception(exc):
             raise TypeError("re-raised") from exc
         ```

tests/functional/feature_flags/test_feature_flags.py

@@ -1655,7 +1655,7 @@ def test_exception_handler(mocker, config):
 
     feature_flags = init_feature_flags(mocker, mocked_app_config_schema, config)
 
-    @feature_flags.exception_handler(ValueError)
+    @feature_flags.validation_exception_handler(ValueError)
     def catch_exception(exc):
         raise TypeError("re-raised")