[FIX] sale_timesheet: revenue computation with sudo()

Since the revenue computation is an automatic system
action, it should be done in sudo(). This avoid access
error.
Indeed, if a company creates and confirms a SO, a task
can be created in another company project. Logging
timesheet from the project company is thus impossible
since the user can not access SO line of the origin
company.

Adding sudo() seems better than givin read access
to 'all' so line for timesheet user.

addons/sale_timesheet/models/account.py

@@ -103,7 +103,7 @@ class AccountAnalyticLine(models.Model):
 
         # set the revenue and billable type according to the product and the SO line
         so_line_id = values.get('so_line') or self.so_line.id
-        so_line = self.env['sale.order.line'].browse(so_line_id) if so_line_id else self.env['sale.order.line'].browse()
+        so_line = self.env['sale.order.line'].browse(so_line_id).sudo() if so_line_id else self.env['sale.order.line'].browse().sudo()
         if so_line.product_id.type == 'service':
             # find the analytic account to convert revenue into its currency
             account_id = values.get('account_id') or self.account_id.id