Don't assume time-step is a `wizard` in `SimulationProgressMessenger`

[glwagner]

This line assumes that the time-step is a TimeStepWizard:

https://github.com/ali-ramadhan/LESbrary.jl/blob/09b0e4f0e8f275592e32d77651f488d50bb645bf/src/Utils/progress_messenger.jl#L35

which breaks simple scripts that don't use a wizard.