[FIX] purchase_stock_picking_return_invoicing: Hide button on proper …

…counter

We should hide the view refunds button when there are no refunds, not
when there aren't invoices.

It hasn't been detected till now, because you usually have an invoice
before doing a refund, but in case you include this purchase order
in a vendor refund, you won't get any vendor bill.

TT32388

purchase_stock_picking_return_invoicing/__manifest__.py

@@ -5,7 +5,7 @@
 {
     "name": "Purchase Stock Picking Return Invoicing",
     "summary": "Add an option to refund returned pickings",
-    "version": "14.0.1.0.0",
+    "version": "14.0.1.1.0",
     "category": "Purchases",
     "website": "https://github.com/OCA/account-invoicing",
     "author": "ForgeFlow, Tecnativa, Odoo Community Association (OCA)",