Reimplement Hashtable::visit() to use Hashtable::pauseResumeVisit()

Currently we have two different implementations to visit hash table values, on that allows for pause and resume functionality (Hashtable::pauseResumeVisit()) and Hashtable::visit() that will just visit all values in a hash table without stopping.

I would make more sense for maintainability to implement Hashtable::visit() using Hashtable::pauseResumeVisit() so that we do not have to maintain two different implementations of this functionality.