Edits that are the same are skipped on the backend but applied in the VS Code undo stack

[itsdouges]

...resulting in undos that do nothing. Harmless but annoying UX. We should test in the Triplex Document module and if the update is skipped, also skip it in VS Code.

To replicate:

• open transforms.tsx
• click the "Test Translate" button twice
• undo twice
• notice the first undo goes back to the original state instead of the duplicate state
  • expected: 1,1 -> 0,0
  • actual: 1,1 -> 0,0 -> (noop)