Type inference failure in defineProps when using generic type aliases for function props

[Yiximail]

Vue version

3.5.13

Link to minimal reproduction

https://play.vuejs.org/#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

Steps to reproduce

When defining props using defineProps with function types that utilize generic type aliases, the compiled prop type incorrectly becomes null instead of Function. This occurs specifically when using:

Generic type aliases (Fun2 in reproduction)

Type aliases referencing generic types (Fun4 in reproduction)

Can see that fn2 and fn4 are null in type

What is expected?

All default function should be Function type

What is actually happening?

fn2 and fn4 both became boolean

System Info

Any additional comments?

No response