fix: Zero values for minimum or maximum were not rendered

[c4phesua]

Description

The check for maximum and minimum values missed the zero value, which is a falsy, so it was not rendered.

Motivation and Context

I’m using this addon for my project, but it doesn’t render the minimum/maximum value. #754 was supposed to fix the issue, but it still persists, so I decided to resolve it myself.

How Has This Been Tested?

• Added more unit tests to cover all new cases and ensure both new and existing tests pass.
• Tested in the demo, and everything is working fine.

Screenshots

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes if appropriate.
• All new and existing tests passed.

[github-actions]

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[sserrata]

Hi @c4phesua, good catch! The changes LGTM...I'll work to merge by EOD. Thanks!

[c4phesua]

Thank you @sserrata