chore: pass linux arch to check-container

[adwk67]

Description

Part of stackabletech/issues#559.
chore: pass linux arch to check-container so that the correct image can be pulled when using manifest lists.

Tested with:
gh workflow run --ref chore/use-arch-for-preflight preflight.yaml
https://github.com/stackabletech/docker-images/actions/runs/8829927993

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

- [x] Changes are OpenShift compatible
- [x] Add an entry to the CHANGELOG.md file
- [x] ~Integration tests~ github action ran successfully

TIP: Running integration tests with a new product image

The image can be built and uploaded to the kind cluster with the following commands:

bake --product <product> --image-version <stackable-image-version>
kind load docker-image <image-tagged-with-the-major-version> --name=<name-of-your-test-cluster>

See the output of bake to retrieve the image tag for <image-tagged-with-the-major-version>.

[sbernauer]

Thanks for fixing!