feat: allow passing directive definition directly to h()

[KaelWD]

Components can be rendered without registering them in options.components:

Vue.extend({
  render (h) {
    return h(MyComponent)
  }
})

But directives can't:

Vue.extend({
  directives: { MyDirective },
  render (h) {
    return h(MyComponent, {
      directives: [{ name: 'my-directive' }]
    })
  }
})

This change allows you to do:

Vue.extend({
  render (h) {
    return h(MyComponent, {
      directives: [{ def: MyDirective }]
    })
  }
})

This already mostly works in 2.7 beta, but there is no type definition and it is overwritten in <script setup> components

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change? (check one)

• Yes
• No

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)