When an executor returns an `AsyncIterable` Nx fails because it cannot
read the value using `getLastValueFromAsyncIterableIterator` (which only
supports `AsyncIterableIterator`. This PR updates it to support both so
executors like `@nx/rollup:rollup` will work.
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## Current Behavior
Running Nx command fails if executor returns `AsyncIterable` e.g. by
calling `createAsyncIterable`.
## Expected Behavior
Nx command succeeds when executor returns `AsyncIterable`.
## Related Issue(s)
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merged. -->
Fixes#23028