[10.x] Throw exception when trying to escape array for database connection

[sidneyprins]

When trying to escape an array value with the database connection class, typeError is thrown due to str_contains() expecting a string. Now a correct exception is thrown.

It happens for example when you try to substitute bindings into raw SQL and this part has for some reason array values in it.

Simplified version

        $queryBuilder = DB::query();
        $queryBuilder->getGrammar()->substituteBindingsIntoRawSql(
            '?', [ [ 'a', 'b'] ]
        );