Summary:
A side affect of the new tree implementation was unecessary renders. For very large trees this was noticable to the user.
A condition is added to the props are equal function for the memoized component to consider if this nodes path is a prefix to the new or previous hover path. This indicates whether it needs to rerender or wether the change in hover state is unconsequential to this component.
changelog: Fixed a bug in the nested highlighting of the data inspector, previously it could remain highlighted while moving the mouse away quickly and multiple highlights could be visible at the same time
Reviewed By: mweststrate
Differential Revision: D39883905
fbshipit-source-id: abdac71574695000addb4ba6477503b7d44a4faf
9101603cf2