oncreate issues with Nested Components in a loop of an array with items added before the end of the array

It seems like there are some tracking issues with a loop, changed arrays (unshifted item), & nested component (manifested in oncreate).

https://svelte.technology/repl?version=1.24.0&gist=3d12f2bbd599b5d73443c0ded72c808c

The expected output is:

```
title__oncreate=Title 0

title__oncreate=Title 1

title__oncreate=Title 2
```
