feat: Detected labels from store

[shantanualsi]

What this PR does / why we need it:

Which issue(s) this PR fixes:
Re: #12341

Special notes for your reviewer:

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• CHANGELOG.md updated
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[shantanualsi]

Note: This PR has #12505 already merged within. The diff will get smaller after the tests PR is merged first.

[shantanualsi]

@trevorwhitney fixed all PR comments. Can you take a look again, thank you!

[trevorwhitney]

changes look good, thanks @shantanualsi! one question left about the slice.Contains vs using a map, wasn't sure where we landed with that? I'm fine if we want to keep it for now since it's such a small value, but something we should keep in mind if we plan to grow that in the future or allow each tenant to configure their own.