The default configuration for CH does not utilize the sorter, even if it is available

[zepfred]

The solver's default settings do not utilize the sorter for CH if it exists. Steps to reproduce:

1. Define a sorter setting.
2. No sorter: run the solver without any changes to build it using the default configuration.
3. Use sorter: run the solver and override the phase list with:

      .withPhases(
                       new ConstructionHeuristicPhaseConfig(),
                       new LocalSearchPhaseConfig());