fix: contract active and finished filters
CHANGELOG:
### Fixed
- [#1030](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1030) Fix contract filters.
Related card: https://trello.com/c/mYHo0vsL/481-els-filtres-en-curs-i-finalitzat-de-contractes-no-s%C3%B3n-gaire-funcionals
Edited by Gerard Funosas