toRefs(<array>) should return an array of `Ref`

[ByScripts]

Version

3.0.0-rc.5

Reproduction link

https://codesandbox.io/s/frosty-resonance-i4nc0

Steps to reproduce

const model = ref(["a", "b", "c"]);
const refs = toRefs(model.value);

What is expected?

refs should be an array of refs:

[
  Ref<arr[0]>,
  Ref<arr[1]>,
  Ref<arr[2]>,
]

What is actually happening?

refs is an object:

{
  '0': Ref<arr[0]>,
  '1': Ref<arr[1]>,
  '2': Ref<arr[2]>,
}