Modifiers (eg. required, readonly, ... on a field) are computed after a
record has been changed. When loading a record they could be computed
based on x2many in a inconsistent state.
eg. on res.partner form, by defaut the email is required depending on:
[('user_ids','!=', [])]
but when switching from one record to another this was computed
wrongly based on the difference between the two records.
This change make the x2many when loading a record ready to be used as
soon as it is set to solve this issue.
forward-port: not needed after saas-15 thanks to framework views rewrite
fix#18239
opw-749483
closes#18815
Nicolas Lempereur
6252c21000