cleanup minor sdk

Author: sanchaymittal

packages/sdk/src/utils/contract.ts renamed to packages/sdk/src/helper/contract.ts

@@ -1,3 +1,2 @@
 export * from "./contract";
 export * from "./listener";
-export * from "./helper";

packages/sdk/src/utils/index.ts renamed to packages/sdk/src/helper/index.ts

@@ -1,3 +1,3 @@
 export * from "./crossChainTransfer";
-export * from "./utils";
+export * from "./helper";
 export * from "./sdk";

packages/sdk/src/utils/listener.ts renamed to packages/sdk/src/helper/listener.ts

@@ -27,7 +27,7 @@ import {
   getVariantHashByInvariantData,
   TransactionManagerEvents,
   TransactionManagerListener,
-} from "./utils";
+} from "./helper";
 
 declare const ethereum: any;
 
@@ -232,7 +232,7 @@ export class NxtpSdk {
         router,
         sendingAssetId,
         receivingAssetId,
-        sendingChainFallback: receivingAddress, // TODO: for now
+        sendingChainFallback:  user, // TODO: for now
         callTo: callTo ?? constants.AddressZero,
         receivingAddress,
         sendingChainId,