[Shopify] Sync gross weight instead of net weight on invoice lines (#5624)

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#### Summary <!-- Provide a general summary of your changes -->
Sync gross weight instead of net weight on invoice lines
#### Work Item(s) <!-- Add the issue number here after the #. The issue
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Fixes
[AB#614154](https://dynamicssmb2.visualstudio.com/1fcb79e7-ab07-432a-a3c6-6cf5a88ba4a5/_workitems/edit/614154)

Author: onbuyuka

src/Apps/W1/Shopify/App/src/Invoicing/Codeunits/ShpfyPostedInvoiceExport.Codeunit.al

@@ -319,7 +319,7 @@ codeunit 30362 "Shpfy Posted Invoice Export"
         TempOrderLine."Gift Card" := false;
         TempOrderLine.Taxable := false;
         TempOrderLine."Unit Price" := SalesInvoiceLine."Unit Price";
-        TempOrderLine.Weight := SalesInvoiceLine."Net Weight";
+        TempOrderLine.Weight := SalesInvoiceLine."Gross Weight";
         TempOrderHeader."Discount Amount" += SalesInvoiceLine."Line Discount Amount";
         TempOrderHeader.Modify(false);