refactor: enhance type handling in AbstractFilterElement and DcaHelper for improved clarity

Author: ericges

src/FilterElement/AbstractFilterElement.php

@@ -16,6 +16,7 @@
 use HeimrichHannot\FlareBundle\Form\FilterFormBuilderInterface;
 use HeimrichHannot\FlareBundle\Specification\ConfiguredFilter;
 use HeimrichHannot\FlareBundle\Specification\ListSpecification;
+use Symfony\Component\Form\FormInterface;
 
 /**
  * @phpstan-template FormOptionsShape of array{

src/Util/DcaHelper.php

@@ -151,7 +151,7 @@ public static function testSQLType(array|string|null $sql, string $expectedType)
         }
 
         if ($regex = static::getSqlTypeRegex($expectedType)) {
-            return \preg_match($regex, $sql);
+            return (bool) \preg_match($regex, $sql);
         }
 
         return false;