fix: issue in pr-104 where app would not show properly

alt-tab-macos/ui/Application.swift

@@ -66,6 +66,7 @@ class Application: NSApplication, NSApplicationDelegate, NSWindowDelegate {
 
     @objc
     func showUi() {
+        uiWorkShouldBeDone = true
         showUiOrCycleSelection(0)
     }