change query->get to query->all to allow for non-scalar values

Closes #3414404

modules/smart_date_recur/src/Plugin/Field/FieldFormatter/SmartDateRecurrenceFormatter.php

@@ -161,7 +161,7 @@ class SmartDateRecurrenceFormatter extends SmartDateDefaultFormatter {
 
     // If an exposed filter is set for the field, use that as the minimum date.
     // @phpstan-ignore-next-line
-    $filter = \Drupal::request()->query->get($items->getName());
+    $filter = \Drupal::request()->query->all($items->getName());
     if (is_array($filter) && isset($filter['min']) && strtotime($filter['min']) > 0) {
       $settings['min_date'] = strtotime($filter['min']);
     }