chore(testing): increase coverage on ValueRenderer

[kevinsperrine]

Closes #2550

Summary

• more tests

Change List (commits, features, bugs, etc)

• add new ValueRenderer.test.jsx to target specific missing portions

Acceptance Test (how to verify the PR)

• coverage now 90%+

Regression Test (how to make sure this PR doesn't break old functionality)

• n/a

Things to look for during review

• Make sure all references to iot or bx class prefix is using the prefix variable
• (React) All major areas have a data-testid attribute. New test ids should have test written to ensure they are not changed or removed.
• UI should be checked in RTL mode to ensure the proper handling of layout and text.
• All strings should be translatable.
• The code should pass a11y scans (The storybook a11y knob should show no violations). New components should have a11y test written.
• Unit test should be written and should have a coverage of 90% or higher in all areas.
• All components should be passing visual regression test. For new styles or components either a visual regression test should be written for all permutations or the base image updated.
• Changes or new components should either write new or update existing documentation.
• PR should link and close out an existing issue

[netlify]

✔️ Deploy Preview for ai-apps-pal-angular ready!

🔨 Explore the source changes: c209e34

🔍 Inspect the deploy log: https://app.netlify.com/sites/ai-apps-pal-angular/deploys/61256a164415c60008ac7b19

😎 Browse the preview: https://deploy-preview-2695--ai-apps-pal-angular.netlify.app

[netlify]

✔️ Deploy Preview for carbon-addons-iot-react ready!

🔨 Explore the source changes: c209e34

🔍 Inspect the deploy log: https://app.netlify.com/sites/carbon-addons-iot-react/deploys/61256a16540e650007b74eee

😎 Browse the preview: https://deploy-preview-2695--carbon-addons-iot-react.netlify.app/

[kodiakhq]

This PR currently has a merge conflict. Please resolve this and then re-add the status: ready to merge 🎉 label.