Temporary fix for broken inactiveTransverseDeflectingCavity in Segment

[jank324]

Description

Implements a temporary fix that prevents inactive TransverseDeflectingCavitys to take part in transfer map reduction.

Ideally, this should be fixed properly at some point to allow for fast tracking by implementing the transfer_map function or inheriting it from Drift in the future, to make sure this part of Cheetah is also as fast as it can be. For now the workaround for being fast is to replace inactive elements with Drift using the respective functions in Segment for doing exactly that.

Motivation and Context

Calling transfer_map on TransverseDeflectingCavity would cause a NotImplementedError to be raised and therefore prevent tracking through any Segment that had an inactive TransverseDeflectingCavity in it.

Fixes #290.

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Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (update in the documentation)

Checklist

• I have updated the changelog accordingly (required).
• My change requires a change to the documentation.
• I have updated the tests accordingly (required for a bug fix or a new feature).
• I have updated the documentation accordingly.
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• I have have fixed all issues found by flake8 (required).
• I have ensured that all pytest tests pass (required).
• I have run pytest on a machine with a CUDA GPU and made sure all tests pass (required).
• I have checked that the documentation builds (required).

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