Merge pull request Expensify#50620 from nkdengineer/fix/50236

fix: Amount shows 0.00 in invoice report and LHN

src/libs/actions/IOU.ts

@@ -2459,10 +2459,7 @@ function calculateDiffAmount(
         // Add the diff to the total if we change the currency from a different currency to the currency of the IOU report
         return updatedAmount;
     }
-    if (updatedCurrency !== iouReport?.currency && currentCurrency === iouReport?.currency) {
-        // Subtract the diff from the total if we change the currency from the currency of IOU report to a different currency
-        return -updatedAmount;
-    }
+
     if (updatedCurrency === iouReport?.currency && updatedAmount !== currentAmount) {
         // Calculate the diff between the updated amount and the current amount if we change the amount and the currency of the transaction is the currency of the report
         return updatedAmount - currentAmount;