fix(#814): update sticky headers when data changes without changing s…

[MateWW]

Description

Fixes (issue #814)

To mitigate that issue we need to bypass PureComponentWrapper
as before it has been only reacting on sticky header index change.

The easies way to understand that issue is SectionList example.
Let's imagine our stickyHeaderIndices contains 3 sections.
It will contain the following values [0, 5, 10]

When we remove first section it will remove element with index 0
with all associated items till next sticky header.
It will result in the following shift in sticky indexes array:

0 -> x
5 -> 0
10 -> 5

Based on that PureComponentWrapper will not recognise that data changed
as it receives only index of current sticky header which will be constantly equal to 0

Reviewers’ hat-rack 🎩

• check if sticky header is rendering properly

Screenshots or videos (if needed)

Before	After
https://github.com/Shopify/flash-list/assets/16048381/7321e098-e0af-4bda-9a78-7d53196f9ea3	https://github.com/Shopify/flash-list/assets/16048381/67bc12dc-874a-45e4-82fe-65a79f3897fb

Checklist

• I have added a changelog entry following the Keep a Changelog guidelines.