[8.17](backport #43170) ci(bk package jobs): Don't package arm64 on amd64 workers

[mergify]

Proposed commit message

It ensures that arm64 packages get built without qemu emulation on dedicated arm64 workers.

#43026 fixed the DRA pipeline, but the CI packaging steps in the BK beats pipelines was not changed.

This should help with some failures we are seeing like:

• https://buildkite.com/elastic/beats-packetbeat/builds/12722#019581e8-89ba-4872-9a94-9314fa2b89cf

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

In the CI itself, let's see how it goes

In addition, I cherry-picked the changes and updated #43145, so I expect to see if it works.

Related issues

Use cases

Screenshots

Logs

---

This is an automatic backport of pull request #43170 done by [Mergify](https://mergify.com).

[botelastic]

This pull request doesn't have a Team:<team> label.