Do not allow users to create accrual entries for locked periods.
This would either create an entry for another date, since the date is
changed automatically by `_get_accounting_date` when posting.
Reproduce:
* Set a lock date
* Do an automatic entry for either changing the account or the period
before that lock date
Or it would traceback because the date would be changed automatically
and no matching would be possible when changing the period.
* Set a lock date
* Create an automatic entry to change the period of an entry before the
tax lock date
closesodoo/odoo#87391
X-original-commit: f830b008781c2f6f5644395688654e64edd5c836
Signed-off-by: Quentin De Paoli <qdp@odoo.com>
Signed-off-by: William André (wan) <wan@odoo.com>