[FIX] account: adequate template loading at first time

Steps to reproduce:
- install accounting (account_accountant)
- go to invoice
- click on "send and print"
-> template is not loaded directly

Solution:
- revert changes of commit #fc5812c327daab4 since the onchange is now called only once

OPW-2732687

closes odoo/odoo#82805

X-original-commit: fa25a3b2b7cdafbce70e39a8a896924f015185a9
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>
Signed-off-by: yosa-odoo <yosa@odoo.com>

addons/account/models/account_move.py

@@ -3165,7 +3165,6 @@ class AccountMove(models.Model):
             default_email_layout_xmlid="mail.mail_notification_paynow",
             model_description=self.with_context(lang=lang).type_name,
             force_email=True,
-            wizard_opened=True
         )
         return {
             'name': _('Send Invoice'),

addons/account/wizard/account_invoice_send.py

@@ -93,8 +93,7 @@ class AccountInvoiceSend(models.TransientModel):
                 self.composer_id.composition_mode = 'comment' if len(res_ids) == 1 else 'mass_mail'
                 self.composer_id.template_id = self.template_id.id
                 self._compute_composition_mode()
-            if not self.env.context.get("wizard_opened"):
-                self.composer_id._onchange_template_id_wrapper()
+            self.composer_id._onchange_template_id_wrapper()
 
     @api.onchange('is_email')
     def _compute_invoice_without_email(self):