Validate only the consumption invoices in background
CHANGELOG:
### Fixed
- [#390](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/390) Only allow to validate consumption invoices in background.
CHANGELOG:
### Fixed
- [#390](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/390) Only allow to validate consumption invoices in background.