Storage Sort Fix

Reset page to 0 before sorting.
We can review sort all vs sort slot at a later date if desired, for now this solves the crash.

NHSE.WinForms/Controls/ItemGridEditor.cs

@@ -248,6 +248,9 @@ private void ClearItemIf(Func<Item, bool> criteria)
     private void B_Sort_Click(object sender, EventArgs e) => ShowContextMenuBelow(CM_Sort, B_Sort);
     private void B_SortAlpha_Click(object sender, EventArgs e)
     {
+        Page = 0;
+        ChangePage(); // reset to beginning before perform sort
+
         var sortedItems = Items.Where(item => item.ItemId != Item.NONE)
             .OrderBy(item => GetItemText(item).ToLower());
         var sortedItemsCopy = new List<Item>(); // to prevent object reference issues
@@ -264,6 +267,9 @@ private void B_SortAlpha_Click(object sender, EventArgs e)
 
     private void B_SortType_Click(object sender, EventArgs e)
     {
+        Page = 0;
+        ChangePage(); // reset to beginning before perform sort
+
         var sortedItems = Items.Where(item => item.ItemId != Item.NONE)
             .OrderBy(ItemInfo.GetItemKind)
             .ThenBy(item => GetItemText(item).ToLower());