Ensure that HttpResponse.BodySubscribers.ofFile writes all bytes

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        The implementation of PathSubscriber should ensure that all bytes from the given buffers are written. Specifically, this method in PathSubscriber:

        @Override
        public void onNext(List<ByteBuffer> items) {
            try {
                out.write(items.toArray(Utils.EMPTY_BB_ARRAY));
        ...

        the implementation assumes out.write(ByteBuffer[]) always writes the content of all buffers - this isn't the case and the method can write a lesser number of bytes from input buffers.

        See https://mail.openjdk.org/pipermail/net-dev/2022-December/019883.html

              Assignee:
              Chris Hegarty
              Reporter:
              Chris Hegarty
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                Created:
                Updated:
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