fix(labels): fix broken label file parsing in archive upload modal (backport #1323)

[mergify]

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---

Fixes #1322

Description of the change:

Fixed the incorrect label parsing utility. The labels should be rendered correctly now.

Motivation for the change:

See #1322

---

This is an automatic backport of pull request #1323 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 73a7e9e has failed:

On branch mergify/bp/cryostat-v3.0/pr-1323
Your branch is up to date with 'origin/cryostat-v3.0'.

You are currently cherry-picking commit 73a7e9e.
  (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:   src/test/RecordingMetadata/RecordingLabelFields.test.tsx
	modified:   src/test/Recordings/ArchivedRecordingsTable.test.tsx

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   src/app/RecordingMetadata/utils.ts

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

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