Undo/Redo: Corrupted subcircuit stack

[manu-aesim]

Describe the bug The "hierarchical" bar disappears when you are in reverting a change that happened in a subcircuit.

To Reproduce Steps to reproduce the behavior:

• Enter inside a subcircuit
• Move something (a device, a signal)
• Go to another design
• Press Ctrl+Z
• it goes back to the subcircuit but the bar is no more there

Expected behavior The "hierarchical" bar should stay on the top of the screen.

[aesim-jeromep-secretgit]

PR : https://github.com/aesim-tech/simba/pull/145

[jpellegrinopws]

Maybe the ticket can be closed ? @manu-aesim