[macOS Export] Disable unpacked .app bundle export on Windows.

platform/macos/export/export_plugin.cpp

@@ -342,7 +342,9 @@ List<String> EditorExportPlatformMacOS::get_binary_extensions(const Ref<EditorEx
 			list.push_back("dmg");
 #endif
 			list.push_back("zip");
+#ifndef WINDOWS_ENABLED
 			list.push_back("app");
+#endif
 		} else if (dist_type == 1) {
 #ifdef MACOS_ENABLED
 			list.push_back("dmg");