Missing dev-loading.html in Keystone 6:node_modules\@keystone-6\core\scripts\cli\static\dev-loading.html

**Steps to Reproduce the Problem**

Set Up Keystone Project: Create a new Keystone project and
Start the Keystone server with : npm run dev
The error ENOENT: no such file or directory, stat 'C:\Users\USER\Desktop\project\podcastcrest\podcast_server\node_modules\@keystone-6\core\scripts\cli\static\dev-loading.html' appears.

**Expected Behavior**

1. The_ Keystone server should start without errors, displaying the admin UI or API as configured.

2. The dev-loading.html file should be present in the specified directory as part of the Keystone package.

**Contextual Information**

- Node Version: I am using Node.js version vv20.17.0

- Keystone Version: I am using Keystone version @keystone-6/core@6.4.0.

- Operating System: The issue occurs on Windows.

- Browser: Not applicable for this issue.

Reproduce the problem in a new Keystone project with Node.js 20.17.0 and @keystone-6/core@6.4.0 by running npm run dev on Windows. Inspect node_modules/@keystone-6/core/scripts/cli/static/ and the dev server path that requests dev-loading.html; done means the server starts without the ENOENT error and the expected admin UI or API is available.

Written by the indexing model from the issue text.