Fixed broken generated tests for LoneElement, due to a newly written test in ListLoneElementSpec.
Fixed broken generated tests for LoneElement, due to a newly written test in ListLoneElementSpec.

dotty-staging/scalatest,dotty-staging/scalatest,scalatest/scalatest,scalatest/scalatest,cheeseng/scalatest,dotty-staging/scalatest,cheeseng/scalatest,scalatest/scalatest,cheeseng/scalatest