Reveal hidden information in dissociated objects

[tjlaboss]

Is your feature request related to a problem? Please describe.
With #595, it is possible to create objects by parsing MCNP strings.

Example:

>>> surf = montepy.Surface("1 2 pz -3")
>>> surf
SURFACE: 1, PZ, periodic surface: None, transform: None, constants: [-3.0]
>>> cell = montepy.Cell("1  9 -8.0  -1 -2")
CELL: 1 
Void material 
density: 8.0 g/cc

This feels deceptively like MontePy has lost the information. Thankfully, it hasn't. The Surface just doesn't know about tr2 and the Cell doesn't know about m9 or any of the surfaces, so it doesn't display them. Proof:

>>> surf.old_transform_number
3
>>> cell.old_mat_number
9

Describe the solution you'd like

In either __str__ or __repr__, reveal the old information when it doesn't match the available information. In this case, that would be the transform, the material, and the cell region or constituent surfaces. Example of what I'd like to see:

>>> surf
SURFACE: 1, PZ, periodic surface: None, transform: None [old_transform: 3], constants: [-3.0]

Describe alternatives you've considered

• Always reveal "old_*" information, if present. This seems superfluous when nothing has changed.
• Show the "old_" information as if it is the current information with whatever information is available. This is actually my personal preference. Example:

>>> surf
SURFACE: 1, PZ, periodic surface: None, transform: TRANSFORM: 3 [undefined], constants: [-3.0]
>>> cell
CELL: 1
MATERIAL: 9 [undefined]

[MicahGale]

I'm thinking maybe:

>>> surf
SURFACE: 1, PZ, periodic surface: None, transform: TRANSFORM: 3 [unlinked], constants: [-3.0]
>>> cell
CELL: 1
MATERIAL: 9 [unlinked]