Slots type is always inferred from the object property in the 2nd argument of defineComponent

[cernymatej]

Vue version

3.5.13

Link to minimal reproduction

https://play.vuejs.org/#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

Steps to reproduce

Open the reproduction and have a look at the type of the val slot data property in both components.

interface Props<T> {
  val: T
}

interface Slots<T> {
  default: { val: T }
}

const AnyExample = defineComponent(
  // I would expect this component to use the `SlotsType` from the `SetupContext` parameter
  <T extends string>(props: Props<T>, ctx: SetupContext<{}, SlotsType<Slots<T>>>) => {
    return () => h('div', [
      ctx.slots.default?.({ val: props.val })
    ])
  },
  {
    props: ['val']
  }
)

<template>
  <!--  The `val` property here is `any`, though I would expect it to be the same type as the `val` prop => `'else'` -->
  <AnyExample val="else" v-slot="{ val }">
    {{ val }}
  </AnyExample>
</template>

What is expected?

When defining a component using defineComponent() with the new function signature, I would expect to be able to pass the generic types into the slots type.

defineComponent(
  <T extends string>(props: Props<T>, ctx: SetupContext<{}, SlotsType<Slots<T>>>) => {

What is actually happening?

The type of the generic properties in the slots is any, instead of the correct generic type.

System Info

Any additional comments?

No response