Support onFocus/onBlur callbacks for input modals

[fabiospampinato]

• Version: 4.0.0
• macOS: Monterey (12.5.1)

I'm writing a little spotlight-like search, and I'd like to close it automatically when it loses focus, but that doesn't seem exactly implementable today. So maybe input modals should have onFocus and onBlur callbacks.

[fabiospampinato]

I tried using windowDidFocus as a workaround, but for some reason it seems to only be fired once every time a modal is opened, but then it's not fired anymore even if other windows do get the focus.

[kasper]

Makes sense!