After setting win32metadata, it doesn't add a Windows desktop shortcut when the user installs the app

### Pre-flight checklist

- [X] I have read the [contribution documentation](https://github.com/electron-userland/electron-forge/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [code of conduct](https://github.com/electron/electron/blob/main/CODE_OF_CONDUCT.md) that this project uses.
- [X] I have searched the issue tracker for a bug that matches the one I want to file, without success.

### Electron Forge version

6.0.0-beta.61

### Electron version

16.0.5

### Operating system

windows 11 (22H2)

### Last known working Electron Forge version

6.0.0-beta.61

### Expected behavior

it can add a Windows desktop shortcut when the user installs the app

### Actual behavior

it doesn't add a Windows desktop shortcut when the user installs the app

### Steps to reproduce

- set `packagerConfig` like this:
```
"platform": "win32",
"name": "xxx",
"icon": "xx",
"appCopyright": "xx",
"iconUrl": "xxx",
"win32metadata": {
"requested-execution-level": "requireAdministrator"
}
```

### Additional information

`package.json`:
```
...
"config": {
"forge": {
"packagerConfig": {
"platform": "win32",
"name": "xxx",
"icon": "xx",
"appCopyright": "xxx",
"iconUrl": "xxx",
"win32metadata": {
"requested-execution-level": "requireAdministrator"
}
},
....
}
```
Use the above configuration, it doesn't add a Windows desktop shortcut when the user installs the app. When `win32metadata` is removed, it will be normal