Summary:
This solves the watch tab crash discussed here D15266478, which got reverted.
Bug: [Here](diffusion/FBS/browse/master/xplat/sonar/iOS/Plugins/FlipperKitLayoutPlugin/FlipperKitLayoutPlugin/FlipperKitLayoutPlugin.mm;57c596a566bec49e343af51b93df65ed1377a2b9$338), when the node is `CKComponentRootView` the `[descriptor childForNode: node atIndex: i]` returns `SKComponentLayoutWrapper`. In the next iteration of the loop, node is `SKComponentLayoutWrapper`, the `[descriptor childForNode: node atIndex: i]` returns `CKComponentRootView`, and hence the infinite recursion
I also tested T44431259, it is not regressed.
Reviewed By: passy
Differential Revision: D15451821
fbshipit-source-id: 25f10112f5f52bb1fa964316a4c7e91a3b29156d
7576e1c61d