## Current Behavior
Our Module Federation Config allows passing tuple remotes:
```js
remotes: [
["remote1", "http://localhost:4201/remoteEntry.js"]
]
```
However, if the Module Federation system is expecting the remotes to be
loaded as Global variables in the browser, then we erroneously pass just
the url to webpack/rspack's `extractUrlAndGlobal` method.
This expects a string of format `name@url`. For non-tuple remote
configurations, we create this correctly.
However, when a tuple is passed, we simply return the url.
## Expected Behavior
We should ensure that the string is massaged to `name@url` even when a
tuple is provided.
