fix(sdk-coin-ton): parse token transactions correctly

TICKET: COIN-5916

Author: MohammedRyaan786

modules/sdk-coin-ton/src/lib/transaction.ts

@@ -317,6 +317,7 @@ export class Transaction extends BaseTransaction {
           payload = WITHDRAW_OPCODE + queryId.toString(16).padStart(16, '0') + withdrawAmount;
           this.transactionType = TransactionType.SingleNominatorWithdraw;
         } else if (opcode === JETTON_TRANSFER_OPCODE) {
+          this.transactionType = TransactionType.SendToken;
           const queryId = order.loadUint(64).toNumber();
           if (queryId !== 0) throw new Error('invalid queryId for jetton transfer');
 

modules/sdk-coin-ton/src/lib/transactionBuilderFactory.ts

@@ -15,8 +15,18 @@ export class TransactionBuilderFactory extends BaseTransactionBuilderFactory {
   from(raw: string): TransactionBuilder {
     let builder: TransactionBuilder;
     try {
-      const tx = this._coinConfig.isToken ? new TokenTransaction(this._coinConfig) : new Transaction(this._coinConfig);
-      tx.fromRawTransaction(raw);
+      const checkTx = new Transaction(this._coinConfig);
+      checkTx.fromRawTransaction(raw);
+
+      let tx: Transaction;
+      if (checkTx.type === TransactionType.SendToken) {
+        // It's a token transaction, so use TokenTransaction for proper parsing
+        tx = new TokenTransaction(this._coinConfig);
+        tx.fromRawTransaction(raw);
+      } else {
+        // It's a regular transaction, use the already parsed one
+        tx = checkTx;
+      }
       switch (tx.type) {
         case TransactionType.Send:
           builder = this.getTransferBuilder();