refactor: Use top-level static imports for real module exports in mocks

Matches the existing teen_process pattern instead of mixing in inline
await import() calls right before the corresponding mock.module call.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: mykola-mokhnach

test/unit/apk-signing.spec.ts

@@ -6,7 +6,9 @@ import * as appiumSupport from '@appium/support';
 import {zip} from '@appium/support';
 import type {ZipEntry} from '@appium/support';
 import sinon from 'sinon';
+import * as teenProcess from 'teen_process';
 
+import * as utilsIndex from '../../lib/utils/index.js';
 import {FIXTURES_ROOT, MODULE_ROOT} from '../constants.js';
 
 const keystorePath = path.resolve(FIXTURES_ROOT, 'appiumtest.keystore');
@@ -26,17 +28,15 @@ let currentGetResourcePath: (...args: any[]) => any = async () => '';
 let currentGetJavaForOs: (...args: any[]) => any = async () => javaDummyPath;
 let currentGetJavaHome: (...args: any[]) => any = async () => javaHome;
 
-const realTeenProcess = await import('teen_process');
 mock.module('teen_process', {
   namedExports: {
-    ...realTeenProcess,
+    ...teenProcess,
     exec: (...args: any[]) => currentExec(...args),
   },
 });
-const realUtils = await import('../../lib/utils/index.js');
 mock.module('../../lib/utils/index.js', {
   namedExports: {
-    ...realUtils,
+    ...utilsIndex,
     getResourcePath: (...args: any[]) => currentGetResourcePath(...args),
     getJavaForOs: (...args: any[]) => currentGetJavaForOs(...args),
     getJavaHome: (...args: any[]) => currentGetJavaHome(...args),

test/unit/system-calls.spec.ts

@@ -1,6 +1,7 @@
 import assert from 'node:assert/strict';
 import {describe, it, beforeEach, afterEach, mock} from 'node:test';
 
+import * as asyncbox from 'asyncbox';
 import sinon from 'sinon';
 import * as teen_process from 'teen_process';
 
@@ -14,10 +15,9 @@ mock.module('teen_process', {
     exec: (...args: any[]) => currentExec(...args),
   },
 });
-const realAsyncbox = await import('asyncbox');
 mock.module('asyncbox', {
   namedExports: {
-    ...realAsyncbox,
+    ...asyncbox,
     sleep: (...args: any[]) => currentSleep(...args),
     retryInterval: (...args: any[]) => currentRetryInterval(...args),
   },