Added debug statement and refresh in default vehicle hal

Added a debug statement to allow for a debug command to generate a large
amount of propConfigs to test large parcelables. DefaultVehicleHal
needed to refresh the properties when DefaultVehicleHal's
getAllPropConfigs is called

Bug: 270740905
Test: atest DefaultVehicleHalTest
Test: atest android.car.apitest.CarPropertyManagerTest
Test: --rerun-until-failure 3
Test: Manual
Change-Id: I95eb98cef64e327894760783ffe9883975359d89