dillon1000/react

Reset effect list when we recompute children

We only use the effect list when we reuse our progressed children.
Otherwise it needs to reset to null.

In all other branches, other than bailoutOnLowPriority, we
revisit the children which recreates this list.

We should also not add fibers to their own effect list since it
becomes difficult to perform work on self without touching the
children too. Nothing else does that neither.

Since that means that the root isn't added to an effect list we
need to special case the root.