[FIX] sale_project: fix sales order stat button traceback

Currently, when we click on 'sales order' stat button of 'project.update'
it shows traceback because action name is incorrect.

In this commit, action is renamed-https://github.com/odoo/odoo/commit/3d10c7c70884993f1290a4fd430a1c52247a8420#

closes #79739
task-2689432

Signed-off-by: Laurent Stukkens (ltu) <ltu@odoo.com>

addons/sale_project/models/project.py

@@ -100,7 +100,7 @@ class Project(models.Model):
                 'icon': 'dollar',
                 'text': _('Sales Order'),
                 'action_type': 'object',
-                'action': 'action_view_so',
+                'action': 'action_view_sos',
                 'show': bool(self.sale_order_id),
                 'sequence': 1,
             })