Neither server, no browser cannot handle unlimited number of lines at the same
time. On server side it leads to series of heavy sql requests. On client side,
browser will eat all the memory on trying to render all of those lines.

This also prevents loading reconciled lines ids to browser.

Size of the batches can be customized via System Parameter
``account.reconcile.batch``

Details:
* ``action_bank_reconcile_bank_statements`` is used on clicking `[Reconcile]`
button in ``account.bank.statement`` form
* ``action_open_reconcile`` is used on clicking `[Reconcile]` for a journal in
Account Dashboard

---

opw-2424992
opw-2344807

closes odoo/odoo#65789

Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>