Information

• OS: Windows
• Version: 0.45.0
• Terminal: Windows Terminal

Describe the bug
Issue #417 mentions that cancellation should be supported, and PR #477 is said to fix it, but it you, for example, press Ctrl+C while selecting items from a list, the process gets stuck.

I debugged the source, and I believe I found the root cause.
This is the only line of code that checks for cancellation, at all, and this is correct:

The problem is that the SelectionPrompt, and likely all other Prompts, are doing this:

They should also check for the cancellation of the cancellation token before they call the underlying method.

To Reproduce

await new SelectionPrompt<T>()
...
    .AddChoices(choices)
    .ShowAsync(AnsiConsole.Console, ct)

Then simply cancel the cancellation token ct, and the process will get stuck.

Expected behavior
The SelectionPrompt.ShowAsync(...) method should return when the cancellation token is cancelled.