Backport of the master fix. The k3d / k3d_arm64 jobs extend
.trigger_review_job, which re-includes .gitlab-ci.yml in a child pipeline and
forwards PIPELINE_TYPE. Their STABLE_BRANCH_PIPELINE rule lacked the
`$CI_PIPELINE_SOURCE != "parent_pipeline"` guard, so on 9-11-stable the child
pipeline re-matched the rule and re-triggered the whole k3d matrix, recursing
into grandchild pipelines on every push.

Add the parent_pipeline guard to the STABLE_BRANCH_PIPELINE rule on both jobs.

Related to #6421

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

ci(k3d): guard k3d trigger jobs against recursion on stable branches

See merge request !5147

Merged-by: João Alexandre Cunha <j.a.cunha@gmail.com>
Approved-by: João Alexandre Cunha <j.a.cunha@gmail.com>

HTTP git operations (git-upload-pack, git-receive-pack) are missing
from the long-running route, causing HTTPS git clones >15s to fail
with curl 18. Only SSH paths were included.

Relates to #6543

Changelog: fixed

fix: add HTTP git paths to long-running HTTPRoute (backport to 10-0-stable)

See merge request !5160

Merged-by: Clemens Beck <cbeck@gitlab.com>
Approved-by: Clemens Beck <cbeck@gitlab.com>
Co-authored-by: Paul Dille <pdille@umich.edu>

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