Fixes search filter with int

Fixes test that fails in 2.6:

jmontoyaa@d33159f

Related/Reported in #1633 #4196 #2190 #2308 #4290

src/Bridge/Doctrine/Common/Filter/SearchFilterTrait.php

@@ -136,7 +136,7 @@ protected function getIdFromValue(string $value)
     protected function normalizeValues(array $values, string $property): ?array
     {
         foreach ($values as $key => $value) {
-            if (!\is_int($key) || !\is_string($value)) {
+            if (!\is_int($key) || \is_array($value)) {
                 unset($values[$key]);
             }
         }