Tracking fails with TransverseDeflectingCavity if embedded in a segment

[Hespe]

The following example currently fails to track:

import cheetah
import torch

segment = cheetah.Segment(elements=[
    cheetah.TransverseDeflectingCavity(length=torch.tensor(1.0))
])
beam = cheetah.ParticleBeam.from_parameters()

segment.track(beam)

The code raises an NotImplementedError in Element.track().