Turbopack: don't include AMP optimizer in NFT (#77242)
Webpack has this in the NFT ignore list, but [Turbopack doesn't support
AMP at
all](https://nextjs.org/docs/app/api-reference/turbopack#unsupported-and-unplanned-features).
So just completely disable that code path so that it also doesn't get
included in NFT and upload unnecessary files to the server.
Also disables all not-already disabled AMP tests for Turbopack
