[FIX] mail,account: use reply_to header from tmplt

Create an invoice for a customer, send him an email from the chatter, in
the mail template set a specific "Reply to" and send the email. The
"Reply-To" template mail header is ignore and the one generated by
`mail_thread._notify_get_reply_to` is used.

See also 1c57d5ed and 7b0806b5

opw-2041640

closes odoo/odoo#35127

Signed-off-by: Julien Castiaux <Julien00859@users.noreply.github.com>

addons/account/wizard/account_invoice_send_views.xml

@@ -14,6 +14,7 @@
                     <field name="invoice_ids" invisible="1"/>
                     <field name="email_from" invisible="1" />
                     <field name="mail_server_id" invisible="1"/>
+                    <field name="reply_to" invisible="1"/>
                     <div name="option_print">
                         <field name="is_print" />
                         <b><label for="is_print"/></b>

addons/mail/wizard/mail_compose_message.py

@@ -310,6 +310,7 @@ class MailComposer(models.TransientModel):
                 'attachment_ids': [attach.id for attach in self.attachment_ids],
                 'author_id': self.author_id.id,
                 'email_from': self.email_from,
+                'reply_to': self.reply_to,
                 'record_name': self.record_name,
                 'no_auto_thread': self.no_auto_thread,
                 'mail_server_id': self.mail_server_id.id,