The virtual thread is not parked in InetAddress isReachable

[Anton Rameykov]

Good afternoon, everyone! I think I've found a bug. There is a code that
basically pings the server. I decided to test it on virtual threads and for
some reason they don't work in it.
Code:
```
    public static void main(String[] args) throws ExecutionException,
InterruptedException {
        System.out.println("Test fixed thread poll");
        long start = System.currentTimeMillis();
        var counter =
ping(Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors()));
        System.out.println("Execute time " + (System.currentTimeMillis() -
start) + " " + counter);

        System.out.println("half-time break");
        LockSupport.parkNanos(10000000000L);

        System.out.println("Test virtual thread poll");
        start = System.currentTimeMillis();
        counter = ping(Executors.newVirtualThreadPerTaskExecutor());
        System.out.println("Execute time " + (System.currentTimeMillis() -
start) + " " + counter);


    }

    private static int ping(ExecutorService executor) throws
ExecutionException, InterruptedException {
        AtomicInteger counter = new AtomicInteger();
        var futures = Stream.<CompletableFuture<Void>> builder();
        for (int i = 0; i < 1000; i++) {
            var fut = CompletableFuture.runAsync(() -> {
                try {
                    InetAddress address = InetAddress.getByName("8.8.8.8");
                    boolean reachable = address.isReachable(100);
                    counter.incrementAndGet();
                } catch (Throwable e) {
                    e.printStackTrace();
                }
            }, executor);
            futures.add(fut);
        }

CompletableFuture.allOf(futures.build().toArray(CompletableFuture[]::new)).get();
        return counter.get();
    }

```
I get the following results. (-Djdk.tracePinnedThreads=full is enabled and
it outputs nothing to the console)
Test fixed thread poll:
Execute time 6317 1000
Test virtual thread poll:
Execute time 6319 1000

I expected to get results like this. (You can get such results if you
replace the request to the network with Thread.sleep(100))
Test fixed thread poll:
Execute time 6308 1000
Test virtual thread poll:
Execute time 110 1000


openjdk 22.0.2 2024-07-16
OpenJDK Runtime Environment GraalVM CE 22.0.2+9.1 (build 22.0.2+9-jvmci-b01)
OpenJDK 64-Bit Server VM GraalVM CE 22.0.2+9.1 (build 22.0.2+9-jvmci-b01,
mixed mode, sharing)
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