fixed sql syntax

dao/src/main/java/org/thingsboard/server/dao/sql/widget/WidgetsBundleRepository.java

@@ -33,7 +33,7 @@ public interface WidgetsBundleRepository extends JpaRepository<WidgetsBundleEnti
     WidgetsBundleEntity findWidgetsBundleByTenantIdAndAlias(UUID tenantId, String alias);
 
     @Query("SELECT wb FROM WidgetsBundleEntity wb WHERE wb.tenantId = :systemTenantId " +
-            "AND (:wb.title is NULL OR ilike(wb.title, CONCAT('%', :textSearch, '%')))")
+            "AND (:textSearch is NULL OR ilike(wb.title, CONCAT('%', :textSearch, '%')) = true)")
     Page<WidgetsBundleEntity> findSystemWidgetsBundles(@Param("systemTenantId") UUID systemTenantId,
                                                        @Param("textSearch") String textSearch,
                                                        Pageable pageable);