[7.17](backport #37973) Fix file handle leak when handling errors in filestream

[mergify]

This is an automatic backport of pull request #37973 done by Mergify.
Cherry-pick of f7e5b4c has failed:

On branch mergify/bp/7.17/pr-37973
Your branch is up to date with 'origin/7.17'.

You are currently cherry-picking commit f7e5b4c41f.
  (fix conflicts and run "git cherry-pick --continue")
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Changes to be committed:
	modified:   CHANGELOG.next.asciidoc

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   filebeat/input/filestream/input.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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