bug #6242 Fixed invalid DQL (alshenetsky)

This PR was merged into the 4.x branch.

Discussion
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Fixed invalid DQL

Fixes #6223

When searching text having only integer fields, an invalid DQL like `SELECT entity FROM App\Entity\Product entity WHERE ` is generated because there are no any `$queryTermConditions`.  This PR should fix the issue.

Commits
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6511215 Fixed invalid DQL

src/Orm/EntityRepository.php

@@ -120,7 +120,7 @@ private function addSearchClause(QueryBuilder $queryBuilder, SearchDto $searchDt
                     $parameterName = sprintf('query_for_ulids_%d', $queryTermIndex);
                     $queryTermConditions->add(sprintf('%s.%s = :%s', $entityName, $propertyConfig['property_name'], $parameterName));
                     $queryBuilder->setParameter($parameterName, $dqlParameters['uuid_query'], 'ulid');
-                } elseif ($propertyConfig['is_text']) {
+                } elseif ($propertyConfig['is_text'] || $propertyConfig['is_integer']) {
                     $parameterName = sprintf('query_for_text_%d', $queryTermIndex);
                     $queryTermConditions->add(sprintf('LOWER(%s.%s) LIKE :%s', $entityName, $propertyConfig['property_name'], $parameterName));
                     $queryBuilder->setParameter($parameterName, $dqlParameters['text_query']);