feat(abstract-utxo): add decodePsbt helper function

Add convenience function that uses wasm-utxo decoder by default

Issue: BTC-2768

Co-authored-by: llm-git <llm-git@ttll.de>

Author: OttoAllmendinger

modules/abstract-utxo/src/transaction/decode.ts

@@ -3,7 +3,7 @@ import { fixedScriptWallet, utxolibCompat } from '@bitgo/wasm-utxo';
 
 import { getNetworkFromCoinName, UtxoCoinName } from '../names';
 
-import { SdkBackend } from './types';
+import { SdkBackend, BitGoPsbt } from './types';
 
 type BufferEncoding = 'hex' | 'base64';
 
@@ -62,6 +62,10 @@ export function decodePsbtWith(
   }
 }
 
+export function decodePsbt(psbt: string | Buffer, coinName: UtxoCoinName): BitGoPsbt {
+  return decodePsbtWith(psbt, coinName, 'wasm-utxo');
+}
+
 export function encodeTransaction(
   transaction: utxolib.bitgo.UtxoTransaction<bigint | number> | utxolib.bitgo.UtxoPsbt | fixedScriptWallet.BitGoPsbt
 ): Buffer {