For #23426:Changed expiring perf probes to never expire (backport #23506)

[mergify]

This is an automatic backport of pull request #23506 done by Mergify.
Cherry-pick of 2fb8d88 has failed:

On branch mergify/bp/releases_v97.0.0/pr-23506
Your branch is up to date with 'origin/releases_v97.0.0'.

You are currently cherry-picking commit 2fb8d8838.
  (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)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   app/metrics.yaml

no changes added to commit (use "git add" and/or "git commit -a")

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

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[firefoxci-taskcluster]

No Taskcluster jobs started for this pull request

The `allowPullRequests` configuration for this repository (in `.taskcluster.yml` on the
default branch) does not allow starting tasks for this pull request.

[eliserichards]

Closing in favor of manual cherry-pick.