Revert "[FIX] remove force _compute_sharing_bond_contract_ids"

CHANGELOG:

### Fixed
- [#280](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/280) Revert removing forced sharing bond contract computation when breaking packs

Related card: https://trello.com/c/8FbZKj3i/1950-fix-els-canvis-de-tarifa-per-trencament-de-packs-no-funcionen

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