Recalculates the rent call of a rent accounting event group: the existing call_rent
event is destroyed and recreated for the same period, so a newly created or edited billing
line (e.g. a rent discount) is reflected. Linked tenant payments are re-allocated and the
generated documents (rent receipt, management report, due date notice) are regenerated.

Accounting closure: this action is refused with 422 if the event group's billing
period falls within a closed accounting period.

Only event groups of nature rent can be recalculated; any other nature returns 422.