dillon1000/react

[Flight] Use about: protocol instead of rsc: protocol for fake evals (#33977)

Chrome DevTools Extensions has a silly problem where they block access
to load Resources from all protocols except [an allow
list](https://github.com/ChromeDevTools/devtools-frontend/blob/eb970fbc6482f281b95bbec1c33c1c539f6d50f0/front_end/models/extensions/ExtensionServer.ts#L60).

https://issues.chromium.org/issues/416196401

Even though these are `eval()` and not actually loaded from the network
they're blocked. They can really be any string. We just have to pick one
of:

```js
'http:', 'https:', 'file:', 'data:', 'chrome-extension:', 'about:'
```

That way React DevTools extensions can load this content to source map
them.

Webpack has the same issue with its `webpack://` and
`webpack-internal://` urls.