Transition raises wrong invalid prop type check warning on array

[cathrinevaage]

Version

3.0.0-rc.5

Reproduction link

https://codesandbox.io/s/vue-3-transition-event-prop-type-check-fault-wymsy

Steps to reproduce

Attach two different events handlers to the same event on transition

What is expected?

It should not raise an invalid prop type check warning

What is actually happening?

It raises a warning, saying it expected a function, but got an array.

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Vue supports several event handlers attached to the same event, but Transition's prop definition doesn't accept it.
It should be changed to accept a function or an array of functions.