Different error message from MySQL when select a window function with group by

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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   If possible, provide a recipe for reproducing the error.

SELECT ROW_NUMBER() OVER() from table60_int_autoinc group by 1 ;

2. What did you expect to see?

mysql> SELECT ROW_NUMBER() OVER() from table60_int_autoinc group by 1 ;
ERROR 1056 (42000): Can't group on 'ROW_NUMBER() OVER()'

3. What did you see instead?

mysql> SELECT ROW_NUMBER() OVER() from table60_int_autoinc group by 1 ;
ERROR 3593 (HY000): You cannot use the window function 'ROW_NUMBER' in this context.'

4. What version of TiDB are you using (tidb-server -V or run select tidb_version(); on TiDB)?