revert addMonitors default behavior to what it has been (#909)
revert addMonitors default behavior to what it has been (#909)

This will benefit from efficiency improvement in model$getNodeNames.  In the future, we may add back this includeData = FALSE flag.
It is only relevant if a model has a top-level data node, which seems unlikely.
nimble-dev/nimble,nimble-dev/nimble,nimble-dev/nimble,nimble-dev/nimble,nimble-dev/nimble