[TOOL-4354] Nebula: Configure erc20Value for swap prepared transaction (#6926)

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## PR-Codex overview
This PR introduces logic to handle transactions involving native tokens in the `SwapTransactionCardLayout` component. It determines if the transaction involves selling a native token and adjusts the transaction data accordingly.

### Detailed summary
- Added a constant `isSellingNativeToken` to check if the transaction involves selling the native token.
- Updated the transaction object to conditionally set `erc20Value` based on whether the native token is being sold.

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Author: MananTank

apps/dashboard/src/app/nebula-app/(app)/components/Swap/SwapCards.tsx

@@ -2,8 +2,10 @@ import { TransactionButton } from "components/buttons/TransactionButton";
 import { useV5DashboardChain } from "lib/v5-adapter";
 import { ArrowRightLeftIcon, CheckIcon } from "lucide-react";
 import {
+  NATIVE_TOKEN_ADDRESS,
   type PreparedTransaction,
   type ThirdwebClient,
+  getAddress,
   prepareTransaction,
   toTokens,
 } from "thirdweb";
@@ -39,6 +41,9 @@ export function SwapTransactionCardLayout(props: {
   const { swapData } = props;
   const txChain = useV5DashboardChain(swapData.transaction.chainId);
 
+  const isSellingNativeToken =
+    getAddress(swapData.from.address) === getAddress(NATIVE_TOKEN_ADDRESS);
+
   return (
     <div className="max-w-lg">
       <div className="rounded-xl border bg-card">
@@ -102,6 +107,12 @@ export function SwapTransactionCardLayout(props: {
                   client: props.client,
                   data: swapData.transaction.data,
                   to: swapData.transaction.to,
+                  erc20Value: isSellingNativeToken
+                    ? undefined
+                    : {
+                        amountWei: BigInt(swapData.from.amount),
+                        tokenAddress: swapData.from.address,
+                      },
                 });
 
                 props.sendTx(tx);