[HOLD for payment 2024-01-18] Fix FlatList jumping

[roryabraham]

Part of the Comment Linking project

Main issue: #20282
Doc section: https://docs.google.com/document/d/1v-ZaIRTZL5LIsyPWB0IopBNNgCajf5WC1OA8cVKtd8I/edit#bookmark=id.bry74gx446k1
Project: Comment Linking

Address the noticeable jumps in the list when scrolling and simultaneously adding items from the bottom of the list. This fix will be applied on both native and web sides.

Manual Test Steps

TBD

#Automated Tests
TBD – probably none

[roryabraham]

cc @perunt

[perunt]

Here we go! 🚀

[perunt]

I re-tested this with a large dataset, and I can confirm that it's now sliding significantly less. I noticed that in version 0.72.1, the react-test-renderer was removed from the runtime, which seems to have improved things. When using a single item render per batch, it functions kinda ok(similar to previous performance levels). As such, I don't believe we need to make any changes here. And we can hop on the next steps.
Here video
@roryabraham , wdyt?

[roryabraham]

Sounds good. Hopefully we'll get much better performance (and no scroll-jumps) when we integrate WishList