[UI] Disable save even after a cancelled change

[brian-mulier-p]

Expected Behavior

We shouldn't be able to save a flow which has no change compared to the original one since it leads to confusion (did I change anything to the original flow ?)

Actual Behaviour

When first opening the flow, the save button is disabled but then if I type something and undo it, I'm back to the original flow and still I can save it again

Steps To Reproduce

1. Open an existing flow
2. Add a character
3. Remove it
4. You can save again your flow while there is no change

Environment Information

• Kestra Version: 0.9.0-SNAPSHOT

Example flow

No response

[brian-mulier-p]

Should we duplicate the original flow YAML and compare it with current value to define if the button should be disabled instead of a simple boolean which never gets reset unless save ?