Unable to use `UNSAFE_className` on `ContextualHelp`

[uraway]

🐛 Bug Report

UNSAFE_className is mentioned on ContextualHelp page, but user's UNSAFE_className is always overridden by built-in className.

🤔 Expected Behavior

ActionButton on ContextualHelp styles can be customized with UNSAFE_className.

😯 Current Behavior

https://github.com/adobe/react-spectrum/blob/main/packages/%40react-spectrum/contextualhelp/src/ContextualHelp.tsx#L53

💁 Possible Solution

Like other components, it should merge user's UNSAFE_className with built-in styles.

🔦 Context

💻 Code Sample

🌍 Your Environment

Software	Version(s)
react-spectrum	3.21.2
Browser
Operating System

🧢 Your Company/Team

🕷 Tracking Issue (optional)

[snowystinger]

Yep, looks like it's not applied anywhere https://codesandbox.io/s/optimistic-worker-ti0tzb?file=/src/App.js

[LFDanLu]

@uraway mind sharing what you are trying to accomplish with UNSAFE_className here? If this is for an Adobe product, then we wanna be careful with any styling overrides. If not, then it should be fine.