ComponentInstance doesn't work on a generic component with defineSlots

[andreww2012]

Vue version

3.5.12

Link to minimal reproduction

https://play.vuejs.org/#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

Steps to reproduce

It's not possible to obtain a generic component type using built-in InstanceType helper. So ComponentInstance Vue helper must be used. However, it returns never if a passed component has generic parameter(s) and uses defineSlots with at least 1 slot defined (with any type).

In the reproduction, completely remove defineSlots or remove all slots definitions (leaving only defineSlots<{}>() and the issue will go away.

What is expected?

It returns the component type.

What is actually happening?

It returns never.

System Info

No response

Any additional comments?

No response