fix: boxplot highlighter fails if all values of box are equal

[SaaiVenkat]

Bug Report

Description

Steps to Reproduce

1. Step 1
2. Step 2
3. Step 3

Actual Behavior

Highlighter goes to the start of the page because of NaN value

Expected Behavior

Highlighting should work properly

Screenshots

Environment

• Operating System: MacOS 14
• Browser: Chrome

Additional Information