Currently, dialog is generic for all x2many tree and there is no option to prevent the dialog in readonly for x2many tree. So in this commit, we add new option 'no_open' for x2many tree to prevent the dialog. closes odoo/odoo#55255 Taskid: 2295969 Closes: #55255 Related: odoo/enterprise#11994 Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>