Currently, the "Chat" button appears in the form view when it is
displayed as a modal and on click sends to the app switcher
because js_class is not loaded on the dialog when employee
form view is opened through the one2many(dialog).
For ex: in online appointment when on click on 'available
emloyee' it will open the employee form view in dialog and there
is a chat icon but it does not work.
So in this commit, we fix this issue by hiding the "chat" button
when the view is displayed as a modal. make a button visible
based on action context and when form view is oped through the
click of one2many then do not display the chat icon on modal
dialog.
closes odoo/odoo#55345
Taskid: 2291340
Closes: #54381
X-original-commit: e2bac64411f80a3fcf2c5d5d60ad3eccf6517e56
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>