feat(dataviz): check simpler unbinned quantitative test solution

[hydrosquall]

PR Description

• Attempt to simplify on fix: Arc mark does not stack for quantitative definitions when different fields are used for theta and radius [draft] #9512 (comment) without having an awareness of polar coordinates

Checklist

• This PR is atomic (i.e., it fixes one issue at a time).
• The title is a concise semantic commit message (e.g. "fix: correctly handle undefined properties").
• npm test runs successfully
• For new features:
  • Has unit tests.
  • Has documentation under site/docs/ + examples.

Tips:

• https://medium.com/@greenberg/writing-pull-requests-your-coworkers-might-enjoy-reading-9d0307e93da3 is a nice article about writing a nice PR.
• Use draft PR for work in progress PRs / when you want early feedback (https://github.blog/2019-02-14-introducing-draft-pull-requests/).

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