Minor error message when arriving at /admin
### Node Version

20.16

### NPM/Yarn/PNPM Version

NPM 10.8.1

### Strapi Version

v5.11.1

### Operating System

Linux (Debian/Ubuntu)

### Database

MySQL

### Javascript or Typescript

Typescript

### Reproduction URL

_No response_

### Bug Description

When navigating in a browser (using chrome, but any was able to repro) to:
<strapihost>/admin

I will get the login popup working just fine, but I will also get:
Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "text/html". Strict MIME type checking is enforced for module scripts per HTML spec.

Reporting simply in the interest of helping bug visibility.  It doesn't appear to be harming anything for us.

### Steps to Reproduce

1.  Navigate to <hostedstrapiurl>/admin.
2. Check Developer Console.

### Expected Behavior

No particular error like that.

### Logs

```shell
There doesn't seem to be any relevant server logs.  The Gets of the admin page all seem fine.

Developer console:
Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "text/html". Strict MIME type checking is enforced for module scripts per HTML spec.
```

### Code Snippets

_No response_

### Media

_No response_

### Additional information

_No response_

### Confirmation Checklist

- [x] I have checked the existing [issues](https://github.com/strapi/strapi/issues) for duplicates.
- [x] I agree to follow this project's [Code of Conduct](https://github.com/strapi/strapi/blob/develop/CODE_OF_CONDUCT.md).