chore: Support experiment uploads without deploy to internal site

[ptang-nr]

Modify the existing publish-experiment workflow to support uploading experiments without deploying to internal site. This will come in handy for cases where we may wish to make experimental builds available on the CDN, to be used outside of internal experiments.

Overview

Related Issue(s)

Testing

[github-actions]

Asset Size Report

Merging this pull request will result in the following asset size changes:

Agent	Asset	Previous Size	New Size	Diff
lite	loader	30.89 kB / 11.21 kB (gzip)	30.89 kB / 11.21 kB (gzip)	0% / 0% (gzip)
lite	async-chunk	53.61 kB / 17.47 kB (gzip)	53.61 kB / 17.47 kB (gzip)	0% / 0% (gzip)
pro	loader	52.58 kB / 18.16 kB (gzip)	52.58 kB / 18.16 kB (gzip)	0% / 0% (gzip)
pro	async-chunk	101.31 kB / 31.02 kB (gzip)	101.31 kB / 31.02 kB (gzip)	0% / 0% (gzip)
spa	loader	60.2 kB / 20.47 kB (gzip)	60.2 kB / 20.47 kB (gzip)	0% / 0% (gzip)
spa	async-chunk	116.02 kB / 35.35 kB (gzip)	116.02 kB / 35.35 kB (gzip)	0% / 0% (gzip)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.90%. Comparing base (a92b557) to head (1a9452b).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1344   +/-   ##
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  Coverage   88.90%   88.90%           
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  Files         170      170           
  Lines        7366     7366           
  Branches     1488     1488           
=======================================
  Hits         6549     6549           
  Misses        711      711           
  Partials      106      106           

Flag	Coverage Δ
unit-tests	79.96% <ø> (ø)

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[metal-messiah]

I think this PR will need to update publish-dev to also consider if the experiment was meant to make it to NR1. Wait to merge this until more validation is done

[metal-messiah]

I think this PR will need to update publish-dev to also consider if the experiment was meant to make it to NR1. Wait to merge this until more validation is done

To expand on this, when publish-dev runs automatically on merges to main, it will check the experiments folder and upload them to the a/b script still. I think the standalone experiments like this need to go to a new directory in S3