This change updates several Odoo apps to use the newer controls for editing and deleting records after an older read-only setting was removed. It helps keep screens such as accounting, appointments, documents, field service, knowledge, marketing, barcode, planning views, and Studio working consistently with the latest platform behavior.

This commit replaces usage of kanban record's read_only_mode in the rendering context by widget.editable and widget.deletable since the read_only_mode attribute is removed in https://github.com/odoo/odoo/pull/188613
It also removes usage of mode for the form view because it was replaced by readonly.

task-4344188