Fix Add Key panel cancel regression

[dantovska]

While fixing another bug in this PR - #4339, I introduced a regression.
When user has opened the add key form but clicks on the cancel button (right next to the Add button), an toast message appears:

It attempts to add the empty key object, or even if there is some input for the name to the state, not considering that it may be canceled.

Applying this changes so If add key panel is closed by clicking cancel, do not pass the key name to the add key panel handler above, otherwise, include it - as is.

[Copilot]

Pull Request Overview

This PR fixes a regression in the "Add Key" panel so that if the user cancels the add key action, the key name is not passed to the add key panel handler.

• Updates the closeAddKeyPanel function to separate cancel and confirm actions.
• Ensures that panel closure and telemetry cleanup are triggered only on cancel.

[KIvanow]

The comments with the isCancelled right under seem a bit redundant. Other than that it looks good

[pawelangelow]

🚀

As further improvement I think we can split this callback into closePanel and closePanelAfterDataSubmit (or something better in terms of describing what actually happens). Even better would be to decouple the logic for closing panel and whatever else we do here in separate callbacks used properly. A.k.a.

closePanel () {
  onClosePanel()
  closeKeyTelemetry()
}

addKey() {
  onClosePanel()
  dispatch(data to where it has to go)
}