this ensures that the changes to this published
property will result in a SwiftUI notification
also made a couple changes in response to devin.ai
code review
for new installations, check if the input method is
enabled and whether it has Accessibility permission
before adding those items to the task list as they
may be in place from a previous installation
provides a simple way for UI to determine what to
present to the user
also generates events, but these could be generated
before the UI has a chance to listen for them
added booleans to indicate input method exists and
matches the current version
made installationState optional
made accessibilityPermissionGranted optional
added comments
