Preprocessing using startTime produce a wrong time span

[auzaheta]

Describe the bug
Preprocessing using startTime produce a wrong time span for the first observation

To Reproduce

library(goldfish)
data("Social_Evolution")

callNetwork <- defineNetwork(nodes = actors, directed = TRUE)
callNetwork <- linkEvents(
  x = callNetwork, changeEvent = calls,
  nodes = actors
)

preprocess <- estimate(callsDependent ~ inertia + recip + trans,
  model = "DyNAM", subModel = "choice",
  estimationInit = list(startTime = calls$time[20]-0.001),
  preprocessingOnly = TRUE
)

Expected behavior
Not sure, but seems that the best value to report is the time elapsed since the last event and not from the first event in the dataset.

Desktop (please complete the following information):

• OS: MacOS
• R Version: 4.4.0
• Goldfish Version: 1.6.8