feat(express): enable esModuleInterop to align test and runtime

Enable esModuleInterop: true in modules/express/tsconfig.json
to fix CommonJS default-import interop at runtime.

Context:
Unit tests run via Mocha with tsx, which implicitly provides CJS
default-import interop. This allowed `import express from 'express'`
to work in tests.The Docker image runs the compiled CJS output without
that interop, causing TypeError: (0 , express_1.    default) is not a function.
Enabling esModuleInterop makes the compiler emit CJS-compatible imports for CJS
modules like express, so  tests and the Docker runtime execute the same semantics.

Notes:
Keeps behavior consistent across tsx tests and compiled production artifacts.
No API changes; build-time only.

TICKET: WP-5759

Author: zahin-mohammad

modules/express/src/enclavedExpressRoutes/enclavedExpressRoutes.ts

@@ -1,5 +1,5 @@
 import * as superagent from 'superagent';
-import * as debug from 'debug';
+import debug from 'debug';
 import * as express from 'express';
 import { retryPromise } from '../retryPromise';
 

modules/express/test/integration/bitgoExpress.ts

@@ -7,7 +7,7 @@ import 'should-http';
 import { agent as supertest } from 'supertest';
 import { DefaultConfig } from '../../src/config';
 import { app as expressApp } from '../../src/expressApp';
-import * as nock from 'nock';
+import nock from 'nock';
 import { Environments } from '@bitgo/sdk-core';
 
 describe('Bitgo Express', function () {

modules/express/test/integration/externalSigner.ts

@@ -7,7 +7,7 @@ import * as sinon from 'sinon';
 
 import * as request from 'supertest';
 import { app as expressApp } from '../../src/expressApp';
-import * as nock from 'nock';
+import nock from 'nock';
 import { Coin, Environments } from 'bitgo';
 
 describe('Custom signing function', () => {

tsconfig.json

@@ -8,6 +8,7 @@
     "inlineSources": true,
     "lib": ["dom", "es2020"],
     "module": "commonjs",
+    "esModuleInterop": true,
     "noFallthroughCasesInSwitch": true,
     "noImplicitThis": true,
     "resolveJsonModule": true,