first try to fix exception related to TimeOffset impact

[omursahin]

In src/main/kotlin/org/evomaster/core/search/gene/datetime/TimeGene.kt, millisecond and ofsett are missing. That causes "java.util.NoSuchElementException: Key org.evomaster.core.search.gene.optional.OptionalGene@820b78a is missing in the map." exception while running on the SUTs.

In this PR, I fixed it, but we need to check if it is the correct way.

Stacktrace:

• Starting to generate test cases
  20:33:19.044 [main] WARN o.e.c.s.i.i.ImpactUtils - the impact of LimitObjectGene was collected in a general manner, i.e., GeneImpact
  20:33:19.205 [main] WARN o.e.c.s.i.i.ImpactUtils - the impact of CycleObjectGene was collected in a general manner, i.e., GeneImpact EvoMaster process terminated abruptly. This is likely a bug in EvoMaster. Please copy&paste the following stacktrace, and create a new issue on �[34mhttps://github.com/EMResearch/EvoMaster/issues�[0m�[0m
  java.util.NoSuchElementException: Key org.evomaster.core.search.gene.optional.OptionalGene@7417ef4f is missing in the map.
  at kotlin.collections.MapsKt__MapWithDefaultKt.getOrImplicitDefaultNullable(MapWithDefault.kt:24)
  at kotlin.collections.MapsKt__MapsKt.getValue(Maps.kt:349)
  at org.evomaster.core.search.gene.datetime.TimeGene.adaptiveSelectSubsetToMutate(TimeGene.kt:116)
  at org.evomaster.core.search.gene.Gene.selectSubsetToMutate(Gene.kt:665)
  at org.evomaster.core.search.gene.Gene.standardMutation(Gene.kt:574)
  at org.evomaster.core.search.gene.Gene.standardMutation(Gene.kt:581)
  at org.evomaster.core.search.service.mutator.StandardMutator.innerMutate(StandardMutator.kt:278)
  at org.evomaster.core.search.service.mutator.StandardMutator.mutate(StandardMutator.kt:301)
  at org.evomaster.core.search.service.mutator.Mutator.mutateAndSave(Mutator.kt:163)
  at org.evomaster.core.search.algorithms.MioAlgorithm.searchOnce(MioAlgorithm.kt:48)
  at org.evomaster.core.search.service.SearchAlgorithm.search(SearchAlgorithm.kt:77)
  at org.evomaster.core.Main$Companion.run(Main.kt:579)
  at org.evomaster.core.Main$Companion.initAndRun(Main.kt:175)
  at org.evomaster.core.Main$Companion.main(Main.kt:85)
  at org.evomaster.core.Main.main(Main.kt)

[arcuri82]

@man-zhang hi, as this PR involves "impact", can you first review it? i can then review it as well afterwards. thx!

[man-zhang]

hi, @arcuri82 sorry for the late reply. I will prioritize this task and review it soon.

[arcuri82]

this has now been reported as well on issues page: #1150

[man-zhang]

hi @arcuri82, I have reviewed the updates, made some fixes, and add a test. now it is ready for you to review.