[macOS, X11] Fix duplicate close requests.

platform/linuxbsd/x11/display_server_x11.cpp

@@ -4206,7 +4206,10 @@ void DisplayServerX11::popup_close(WindowID p_window) {
 		WindowID win_id = E->get();
 		popup_list.erase(E);
 
-		_send_window_event(windows[win_id], DisplayServerX11::WINDOW_EVENT_CLOSE_REQUEST);
+		if (win_id != p_window) {
+			// Only request close on related windows, not this window.  We are already processing it.
+			_send_window_event(windows[win_id], DisplayServerX11::WINDOW_EVENT_CLOSE_REQUEST);
+		}
 		E = F;
 	}
 }

platform/macos/display_server_macos.mm

@@ -3448,7 +3448,10 @@ void DisplayServerMacOS::popup_close(WindowID p_window) {
 		WindowID win_id = E->get();
 		popup_list.erase(E);
 
-		send_window_event(windows[win_id], DisplayServerMacOS::WINDOW_EVENT_CLOSE_REQUEST);
+		if (win_id != p_window) {
+			// Only request close on related windows, not this window.  We are already processing it.
+			send_window_event(windows[win_id], DisplayServerMacOS::WINDOW_EVENT_CLOSE_REQUEST);
+		}
 		E = F;
 	}
 	if (!was_empty && popup_list.is_empty()) {