[Hotfix Main]: fix(): Fix coordinate transformation writes to frozen BETDisk fields

[github-actions]

Hotfix of PR #1979 (#1979) to the main branch.
Hey @benflexcompute, please review this hotfix PR created from your original PR.

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Note

Medium Risk
Changes the coordinate-system transformation traversal to only reassign list/tuple fields when an element actually changes, which could subtly affect any models relying on the previous always-copy behavior. Scope is limited to preprocessing/translation but runs across many param types.

Overview
Prevents apply_coordinate_system_transformations from blindly recreating and reassigning every list/tuple field during recursion; it now only copies and setattrs the sequence when at least one element is transformed (e.g., an EntityBase replacement).

Adds a regression test covering a BETDisk with coordinate-system-assigned entities to ensure the entity is transformed while unrelated (potentially frozen) numeric/parameter sequences like mach_numbers, twists, and chords are left untouched.

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