[TSX] Optional props(with default) from mixins or extends are treated as required

[wonderful-panda]

Version

3.0.0-rc.9

Reproduction link

https://github.com/wonderful-panda/vue-next/blob/tsx-typeerror/test-dts/defineComponent.test-d.tsx#L667-L669

Steps to reproduce

1. checkout tsx-typeerror branch of wonderful-panda/vue-next
2. Run build and test-dts

Below code is a simplified example.
mP1 should be optional, but treated as required in TSX.

const Mixin = defineComponent({
  props: {
      mP1: { type: String, default: "a" }
  }
})

const MyComponent = defineComponent({
  mixins: [Mixin]
}

const elm = <MyComponent /> // TS2322 Property 'mP1' is missing


/* extends also has same problem */

const MyComponent2 = defineComponent({
  extends: Mixin
}

const elm = <MyComponent2 /> // TS2322 Property 'mP1' is missing

What is expected?

no error (mP1 is treated as optional)

What is actually happening?

mP1 is treated as required and compilation error TS2322 occurred.

[HcySunYang]

This issue no longer exists in the latest version