When adding a field on a model, only the _inherit were checked, not the _inherits.
This commit fixes the following bug:
1. install `sale` (adding the field `sale_order_count` on `res.partner`)
- field `sale_order_count` is created on `res.partner`
- the ir.model.field is tagged with module `sale`
2. install `point_of_sale` (adding another field on `res.users`)
- field `sale_order_count` is created on `res.users`
- the ir.model.field is tagged with module `point_of_sale`
When installing sale, the model res.partner is returned in the list of impacted
models, on which _create_fields method is called but not res.users.
A direct consequence of this bug is that, the fields translations are in the
wrong module. May fix some uninstallation bugs too.
Closes#16104
Martin Trigaux
79519ce400