Fix: CONTAINS condition fails to match a value containing a backslash

Author: benno-truevault

src/PdbHelpers.php

@@ -169,6 +169,7 @@ public static function likeEscape(string $str, string $escape = '\\'): string
         return strtr($str, [
             '%' => $escape . '%',
             '_' => $escape . '_',
+            '\\' => $escape . '\\',
         ]);
     }