Close Underlying Writer when IPC `StreamSink` is Closed

[theadd336]

• Closes #1462
• Calls flush and close on the underlying writer when poll_close is called.

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.02 :warning:

Comparison is base (73ed7c8) 83.45% compared to head (3db0283) 83.43%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1463 +/- ## ========================================== - Coverage 83.45% 83.43% -0.02% ========================================== Files 376 376 Lines 41161 41163 +2 ========================================== - Hits 34350 34344 -6 - Misses 6811 6819 +8 ``` | [Impacted Files](https://codecov.io/gh/jorgecarleitao/arrow2/pull/1463?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jorge+Leitao) | Coverage Δ | | |---|---|---| | [src/io/ipc/write/stream\_async.rs](https://codecov.io/gh/jorgecarleitao/arrow2/pull/1463?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jorge+Leitao#diff-c3JjL2lvL2lwYy93cml0ZS9zdHJlYW1fYXN5bmMucnM=) | `85.26% <100.00%> (+0.31%)` | :arrow_up: | ... and [4 files with indirect coverage changes](https://codecov.io/gh/jorgecarleitao/arrow2/pull/1463/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jorge+Leitao) Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jorge+Leitao). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jorge+Leitao)

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[ritchie46]

Thanks @theadd336!