macOS: Fix shortcuts in the global menu bar responding slowly when cursor blink is disabled/timed out

The event loop needed to be forced to tick over immediately otherwise
the changes were not being rendered till some other event such as mouse
motion or key release was not delivered.

Fixes #3693

docs/changelog.rst

@@ -26,6 +26,9 @@ To update |kitty|, :doc:`follow the instructions <binary>`.
 
 - macOS: Fix a regression in 0.21.0 that broke middle-click to paste from clipboard (:iss:`3730`)
 
+- macOS: Fix shortcuts in the global menu bar responding slowly when cursor blink
+  is disabled/timed out (:iss:`3693`)
+
 - When displaying scrollback ensure that the window does not quit if the amount
   of scrollback is less than a screen and the user has the ``--quit-if-one-screen``
   option enabled for less (:iss:`3740`)

kitty/child-monitor.c

@@ -1030,6 +1030,7 @@ process_global_state(void *data) {
             }
             memset(cocoa_pending_actions, 0, sizeof(cocoa_pending_actions));
             has_cocoa_pending_actions = false;
+            maximum_wait = 0;  // ensure loop ticks again so that the actions side effects are performed immediately
         }
 #endif
     report_reaped_pids();