Add NonAction to CreatePSBT

BTCPayServer/Controllers/WalletsController.cs

@@ -262,6 +262,7 @@ namespace BTCPayServer.Controllers
             }
         }
 
+        [NonAction]
         public async Task<CreatePSBTResponse> CreatePSBT(BTCPayNetwork network, DerivationSchemeSettings derivationSettings, WalletSendLedgerModel sendModel, CancellationToken cancellationToken)
         {
             var nbx = ExplorerClientProvider.GetExplorerClient(network);