Adjust calculation for difference between invoice and bill of lading amounts

Update BLReconciliation component to correctly calculate the difference between invoiceAmount and blAmount by swapping their order in the subtraction operation.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 818c4995-85cc-4d53-8067-b67dcee52c2d
Replit-Commit-Checkpoint-Type: full_checkpoint

client/src/pages/BLReconciliation.tsx

@@ -912,7 +912,7 @@ export default function BLReconciliation() {
                                 const blAmount = delivery.blAmount ? parseFloat(delivery.blAmount) : 0;
                                 const invoiceAmount = delivery.invoiceAmount ? parseFloat(delivery.invoiceAmount) : 0;
                                 if (blAmount && invoiceAmount) {
-                                  const diff = blAmount - invoiceAmount;
+                                  const diff = invoiceAmount - blAmount;
                                   const diffAbs = Math.abs(diff);
                                   return (
                                     <div className={`font-medium text-center ${