Correct handling of dt_min in ControlledStepperWrapper

[reneSchm]

Bug description

• ControlledStepperWrapper incorrectly returns a failed step size adaption if dt==dt_min
• ControlledStepperWrapper may set dt to a value smaller than dt_min

Version

Any

To reproduce

use a ControlledStepperWrapper for example with dt_max==dt_min

Relevant log output

No response

Add any relevant information, e.g. used compiler, screenshots.

No response

Checklist

• Attached labels, especially loc:: or model:: labels.
• Linked to project