This fixes an issue where information entered or shown as read-only in a pop-up form was not correctly saved back into related list fields. Users can now rely on those values being preserved when creating or updating related records, reducing data loss and manual correction.

Transfer options to 'data_create' and 'data_update'
Add tour to check the fix

This change fixes how forms update related line items and linked records when field values change automatically. It helps ensure users see complete, consistent information in forms and reduces the risk of edits being lost or displayed incorrectly.

Use the method `convert_to_onchange` to convert cached values in the output format of method `onchange`. The format of `one2many` and `many2many` fields is modified to return the values of the fields instead of a diff with commands.