chore(utxo-lib): update import = to ES6 imports

This is done for Node.js 24 compatibility

Replace `import assert = require('assert')` with `import assert from 'assert'`
to resolve "TypeScript import equals declaration is not supported in strip-only mode" error

TICKET: WP-5182

Author: zahin-mohammad

modules/utxo-lib/src/taproot.ts

@@ -3,7 +3,7 @@
 // https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki
 
 import { TapTree as PsbtTapTree, TapLeaf as PsbtTapLeaf } from 'bip174/src/lib/interfaces';
-import assert = require('assert');
+import assert from 'assert';
 import FastPriorityQueue = require('fastpriorityqueue');
 import { script as bscript, crypto as bcrypto, payments as bpayments } from 'bitcoinjs-lib';
 import { ecc as eccLib } from './noble_ecc';

modules/utxo-lib/test/bitgo/Unspent.ts

@@ -1,4 +1,4 @@
-import assert = require('assert');
+import assert from 'assert';
 import { unspentSum } from '../../src/bitgo';
 
 function mockUnspent<TNumber extends number | bigint>(value: TNumber) {

modules/utxo-lib/tsconfig.json

@@ -3,7 +3,7 @@
   "compilerOptions": {
     "outDir": "./dist",
     "rootDir": ".",
-    "esModuleInterop": false,
+    "esModuleInterop": true,
     "typeRoots": ["../../types", "./node_modules/@types", "../../node_modules/@types"],
     "resolveJsonModule": true
   },