Re-render list when numColumns changes

[YoussefHenna]

• When numColumns changes dynamically on a FlatList we get an error Changing numColumns on the fly is not supported.... To overcome this we can have numColumns as the key of the flatlist and that would trigger it to re-render whenever it changes.
• Had to make a couple of changes throughout the code to ensure everything uses our own implementation of flatlist that has this change.

[linear]

P-5267 FlatList numColumns Change Causes Error

[github-actions]

Published version: @draftbit/[email protected]