bug#53276: The blink-cursor-mode not work after startup on macOS

[Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Po Lu <luangruo@yahoo.com> writes:

> If you don't know the answer, I think we should install the following
> version of `windowDidBecomeKey' in master and see if anyone complains:
>
>     - (void)windowDidBecomeKey      /* for direct calls */
>     {
>       struct ns_display_info *dpyinfo = FRAME_DISPLAY_INFO (emacsframe);
>       struct frame *old_focus = dpyinfo->ns_focus_frame;
>       struct input_event event;
>
>       EVENT_INIT (event);
>
>       NSTRACE ("[EmacsView windowDidBecomeKey]");
>
>       if (emacsframe != old_focus)
>         dpyinfo->ns_focus_frame = emacsframe;
>
>       ns_frame_rehighlight (emacsframe);
>
>       event.kind = FOCUS_IN_EVENT;
>       XSETFRAME (event.frame_or_window, emacsframe);
>       kbd_buffer_store_event (&event);
>     }
>
> And if nobody complains in a year, convert the rest of the places where
> emacs_event is used to do this as well.

I pushed this to master along with another change that should hopefully
let C-g be handled much faster on the NS port.

Eason, can you let me know if the problem has been solved for you?
Thanks.