fix: Handle undefined nonce in transaction status (#765)

Author: arcoraven

src/server/schemas/transaction/index.ts

@@ -292,7 +292,10 @@ export const toTransactionSchema = (
     toAddress: transaction.to ?? null,
     data: transaction.data ?? null,
     value: transaction.value.toString(),
-    nonce: "nonce" in transaction ? transaction.nonce : null,
+    nonce:
+      "nonce" in transaction && transaction.nonce !== undefined
+        ? transaction.nonce
+        : null,
     deployedContractAddress: transaction.deployedContractAddress ?? null,
     deployedContractType: transaction.deployedContractType ?? null,
     functionName: transaction.functionName ?? null,