feat: default statistics filter to a rolling 12-month window

src/Controller/Administrative/Statistics/FeedbackRatingsController.php

@@ -35,8 +35,8 @@ class FeedbackRatingsController extends AbstractController
         }
 
         $statistics = $this->feedbackRepository->getAverageRatingsByQuestionAndFeedbackSet(
-            $filterDto->getDateFrom(),
-            $filterDto->getDateTo(),
+            $filterDto->getEffectiveDateFrom(),
+            $filterDto->getEffectiveDateTo(),
         );
 
         // Prepare chart data for each feedback set