fix: normalize non-numeric body dimension values of existing drafts

src/Service/BookingEditDraftMerger.php

@@ -46,6 +46,8 @@ class BookingEditDraftMerger
         // Body dimensions
         if (true === isset($data['bodyDimensions']) && true === is_array($data['bodyDimensions'])) {
             $this->applyBodyDimensions($participant, $data['bodyDimensions']);
+            // TODO: Drop this once all legacy drafts no longer contain non-numeric body-dimension values.
+            $participant->normalizeBodyDimensions();
         }
 
         // Room assignment