[8.17](backport #42315) [streaming] - Made namespace consistent in logging & put a null check to stop paincs on shutdown

[mergify]

Type of change

• Bug

Proposed commit message

1. Made namespace consistent in suggested debug logs.
2. Put in a null check during input shutdown to avoid a panic.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Disruptive User Impact

Author's Checklist

• [ ]

How to test this PR locally

Related issues

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Logs

---

This is an automatic backport of pull request #42315 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of ef3bd69 has failed:

On branch mergify/bp/8.17/pr-42315
Your branch is up to date with 'origin/8.17'.

You are currently cherry-picking commit ef3bd69d3.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   CHANGELOG.next.asciidoc

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   x-pack/filebeat/input/streaming/crowdstrike.go
	both modified:   x-pack/filebeat/input/streaming/websocket.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

[botelastic]

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