Move selection of item in the commodity market to the beginning of the event handler, so everything that follows is executed with the new selection

Remove reset of selected item from CommodityMarket:Refresh
Move reset of selected item to the Commodity Market Tab's refresh handler

data/pigui/libs/commodity-market.lua

@@ -85,10 +85,10 @@ function CommodityMarketWidget.New(id, title, config)
     end
     config.canDisplayItem = config.canDisplayItem or function (s, e) return e.purchasable and e:IsValidSlot("cargo") and Game.system:IsCommodityLegal(e) end
     config.onClickItem = config.onClickItem or function(s,e,k)
+        s.selectedItem = e
         s.tradeModeBuy = true
         s:ChangeTradeAmount(-s.tradeAmount)
         s:Refresh()
-        s.selectedItem = e
     end
 
     self = MarketWidget.New(id, title, config)
@@ -363,7 +363,6 @@ end
 
 function CommodityMarketWidget:Refresh()
     MarketWidget.refresh(self)
-    self.selectedItem = nil
 end
 
 function CommodityMarketWidget:Render(size)

data/pigui/modules/station-view/03-commodityMarket.lua

@@ -31,5 +31,6 @@ StationView:registerView({
 		resetSize = true
 		commodityMarket:Refresh()
 		commodityMarket.scrollReset = true
+		commodityMarket.selectedItem = nil
 	end,
 })