[petite-vue] initialData type from createApp() loss in template

[johnsoncodehk]

reproduction code:

<script type="module">
  import { createApp } from '../src'

  createApp({ foo: 1 }).mount()
</script>

<div>
  <!-- Property 'foo' does not exist on type 'typeof globalThis & { $: ComponentInternalInstance; $data: {}; $props: Partial<{}> & Omit<Readonly<ExtractPropTypes<{}>> & VNodeProps & AllowedComponentProps & ComponentCustomProps, never>; ... 10 more ...; $watch(source: string | Function, cb: Function, options?: WatchOptions<...> | undefined): WatchStopHandle; } &...'.ts(2339) -->
  {{ foo }}
</div>