macos: fix missing goto_window union entry

Author: mitchellh

include/ghostty.h

@@ -859,6 +859,7 @@ typedef union {
   ghostty_action_move_tab_s move_tab;
   ghostty_action_goto_tab_e goto_tab;
   ghostty_action_goto_split_e goto_split;
+  ghostty_action_goto_window_e goto_window;
   ghostty_action_resize_split_s resize_split;
   ghostty_action_size_limit_s size_limit;
   ghostty_action_initial_size_s initial_size;