fix(undo-redo): prevent duplicated entries on undo stack

[manfredsteyer]

Perform a deep comparison to prevent duplicate entries on the stack. This can, for example, happen after an undo if the component sends back the undone filter to the store.

[rainerhahnekamp]

@manfredsteyer do you maybe have a small snippet?

[manfredsteyer]

@rainerhahnekamp What do you mean with small snippet?

[rainerhahnekamp]

Just some pseudo code so that I can come up with a unit test for the

after an undo if the component sends back the undone filter to the store.

I'm not sure if I fully understand it.