Enable scene Undo/Redo

[lassoan]

Is your feature request related to a problem? Please describe.

Undo/redo was disabled a couple of years ago because it did not work reliably, but users would like to have this feature (see feature request and recent discussion).
Fixes have been made and the approach was changed to only enable it for nodes that are known to work well with undo and a prototype implementation for enabling it works fairly well.

Describe the solution you'd like

Enable undo/redo and show it in the menu/toolbar.

Additional context

Related issues:

• Adding a default Markups node to scene removes measurements #7239
• Undo feature for Markups module #4576
• Add ability to safely release unintentionally dragged handle #6038

[aramSofthenge]

Could you be a bit more specific about the assignment, is it about global undo/redo or local modules?
In the "prototype implementation for enabling it" they show an example of what they want to get, however I have checked with myself and everything works correctly and all Point List's work as expected, so I would appreciate it if you could clarify what exactly is the problem.

[jamesobutler]

however I have checked with myself and everything works correctly and all Point List's work as expected, so I would appreciate it if you could clarify what exactly is the problem.

As mentioned in the “Related Issues” section, I think the following issue associated with undo/redo still exists:
#7239

On the forum there have been other reports such as:

• https://discourse.slicer.org/t/undo-process-not-work-correctly/33899
• https://discourse.slicer.org/t/request-move-one-control-point-menu-item/34578/11