fix(macos): show window on dock click when using menu bar mode

When "Show in menu bar" is enabled and the window is closed, clicking
the app icon in the dock now properly shows the window again instead
of only focusing it.

electron/main/index.ts

@@ -351,10 +351,14 @@ app.on('second-instance', () => {
     }
 })
 
-app.on('activate', () => {
+app.on('activate', (event, hasVisibleWindows) => {
     const allWindows = BrowserWindow.getAllWindows()
     if (allWindows.length) {
         allWindows[0].focus()
+        // show the window if it's hidden (e.g. the window was closed with "show in menu bar" setting turned on)
+        if (!allWindows[0].isVisible()) {
+            allWindows[0].show()
+        }
     } else {
         createWindow()
     }