react/jsx-handler-names should not trigger on "only"

[tkers]

The rule was triggered for a property only. I assume it checks for any prop key starting with on, but it would maybe make sense changing this to match on[A-Z] (i.e. camelcased keys) instead?

[yannickcr]

Yep, maybe it would be more convenient to use a regex (and make it customizable) to check the handler names instead of using a simple prefix like today.

[mik01aj]

+1. I often use _.noop as a handler in my tests. I'd like to ignore this specific case.

[mik01aj]

should I open another issue for making this regex configurable so that I can exclude _.noop?

[ljharb]

@mik01aj yes, I think a separate issue is better