[FIX] mrp_repair: group multiple repairs into one invoice
[FIX] mrp_repair: group multiple repairs into one invoice

While `action_repair_invoice_create` is called on active_ids, it was working
only on one record at a time

Closes #18158

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo