account: Fix journal dashboard graph query order

As the query results are set in a list of dicts relying on the
position of the dicts inside the list, the SQL query must ensure
the results returned by postgres are ordered properly so that it
will match the order in which the dicts are defined inside the list.

closes odoo/odoo#81966

X-original-commit: bac93bf5
Signed-off-by: Laurent Smet <las@odoo.com>