Add has_active_contracts parameter

CHANGELOG:

### Added
- [#886](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/886) Add has_active_contracts parameter to partner_otrs_view.py

Related card: https://trello.com/c/BG4JScuH/1440-add-field-hasactivecontracts-to-partnerotrsview

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