[FIX] account: invoice reset to draft when the default report is removed
[FIX] account: invoice reset to draft when the default report is removed

When the report `account.report_invoice` was being deleted,
it was no longer possible to reset an invoice to draft.

This is related to revision
291561a19741f81cdd2c6ba42a228f02d670c24e

dfang/odoo,hip-odoo/odoo,ygol/odoo,bplancher/odoo,ygol/odoo,ygol/odoo,dfang/odoo,microcom/odoo,hip-odoo/odoo,storm-computers/odoo,hip-odoo/odoo,bplancher/odoo,storm-computers/odoo,ygol/odoo,dfang/odoo,ygol/odoo,laslabs/odoo,laslabs/odoo,hip-odoo/odoo,hip-odoo/odoo,dfang/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,storm-computers/odoo,bplancher/odoo,dfang/odoo,dfang/odoo,laslabs/odoo,storm-computers/odoo,microcom/odoo,microcom/odoo,ygol/odoo,microcom/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,laslabs/odoo,microcom/odoo,bplancher/odoo,bplancher/odoo,ygol/odoo,hip-odoo/odoo,Elico-Corp/odoo_OCB,storm-computers/odoo,bplancher/odoo,microcom/odoo,storm-computers/odoo,laslabs/odoo