When fast check fails on a package, it should fast check all the package's dependencies

Right now if fast check fails on a package, it will not necessarily fast check the dependencies of that package. This is a perf bug.

Basically, we need to keep the PublicRangeFinder alive even through transforming in order to add additional pending dependencies to search for.

Start by tracing the PublicRangeFinder through the package fast-check and transformation flow, focusing on where it is kept alive and where pending dependencies are added. Reproduce or inspect the failing fast-check path, then verify that dependencies of a package whose check fails are also fast checked.

Written by the indexing model from the issue text.