Killing the dialog process from terminal doesn't close the dialog on 3.0.0

[philipross]

Describe the bug
When stopping the dialog process from terminal (using Ctrl+C in terminal) when using the 3.0.0 pre-release, the dialog window doesn't close.
It does on version 2.5.6.4805

To Reproduce
Steps to reproduce the behavior:

1. Install dialog 3.0.0.4814
2. Run a simple dialog command (example dialog --title test --ontop
3. Wait for the dialog window to appear
4. Then stop the process in terminal with Ctrl+C
5. dialog window does not close.

Expected behavior
When running the same steps above using the build 2.5.6.4805, the dialog window closes

Screenshots
N/A

Desktop (please complete the following information):

• macOS version 15.7 and 26.0 (RC)
• swiftDialog version 2.5.6.4805 (it does exhibit the expected behaviour) and 3.0.0.4814 (it doesn't close the dialog)

Additional context
I appreciate this isn't really how dialog is used when pushing things via MDM, as you wouldn't run Ctrl+C from an MDM deployed script/shell command. But this is very useful behaviour when testing and crafting dialogs.