[FIX] analytic: _default_user

The "user_id" linked to the employee_id set on the sheet must be used
when editing a sheet.

opw:659647

addons/analytic/models/analytic.py

@@ -93,7 +93,7 @@ class account_analytic_line(models.Model):
 
     @api.model
     def _default_user(self):
-        return self.env.user.id
+        return self.env.context.get('user_id', self.env.user.id)
 
     name = fields.Char('Description', required=True)
     date = fields.Date('Date', required=True, index=True, default=fields.Date.context_today)