[ASCollectionNode] When using reloadSections:, sometimes supplementary nodes are not removed.

[appleguy]

I believe this issue is caused by not calling invalidateLayout in a case that it is necessary. We should probably use a custom invalidation context to more efficiently invalidate only the section that is being reloaded.

Attached is a test project that demonstrates the issue. cc @nguyenhuy, @Adlai-Holler

SupplementaryViewBugDemo.zip