RFR: 8353479: jcmd with streaming output breaks intendation

[Johan Sjölen]

On Tue, 1 Apr 2025 21:23:01 GMT, Alex Menkov <amenkov at openjdk.org> wrote:

> `outputStream` implementations should call `update_position` from `write` to correctly handle indentation.
> The fix adds the call to `attachStream::write`
> 
> testing: sanity tier1;
>    in progress: tier2..4,hs-tier5-svc

Thanks!

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Marked as reviewed by jsjolen (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24368#pullrequestreview-2736139795