Procedure parameter edits do not get grouped

[BeksOmega]

Describe the bug

To Reproduce

Steps to reproduce the behavior:

1. Go to the playground
2. Drag out a procedure block
3. Add a parameter
4. Edit its name
5. Hit ctrl + z repeatedly.
6. Observe how the first few triggers don't do anything, and then every other trigger will remove a letter

[Edit]
The first few undos are undoing variable create events. If you stop undoing before you start removing letters, you end up with erroneous variables in the toolbox.

Expected behavior

The entire edit is undone with one trigger.

Additional context

This exists on master and develop, even though text-input fields now group edits on develop. I think change events are probably messing things up.