When we have (inline) domain widget within a modal, user can not see
all the fields because overflow is hidden on the modals by default.
This is not ideal behavior.
With this commit, when the inline domain editor is opened with field
widget within a modal, we allow field selector to overflow by
manually setting visible overflow on the parent modal. The changes
are inspired by 'DomainSelectorDialog'.
Task ID-2480625
COM odoo/odoo#68586
Sunil Shrimali
7c2fb9bb16