test: refactor to not use paid_invoices stream for real invoice tests (#2628)

lnbits/core/crud.py

@@ -972,7 +972,6 @@ async def update_payment_details(
         f"UPDATE apipayments SET {', '.join(set_clause)} WHERE checking_id = ?",
         tuple(set_variables),
     )
-    return
 
 
 async def update_payment_extra(

lnbits/tasks.py

@@ -217,6 +217,8 @@ async def invoice_callback_dispatcher(checking_id: str, is_internal: bool = Fals
             preimage=status.preimage,
             status=PaymentState.SUCCESS,
         )
+        payment = await get_standalone_payment(checking_id, incoming=True)
+        assert payment, "updated payment not found"
         internal = "internal" if is_internal else ""
         logger.success(f"{internal} invoice {checking_id} settled")
         for name, send_chan in invoice_listeners.items():