Add some missing feature tags to the "Override For..." menu

This closes https://github.com/godotengine/godot-docs/issues/2782.

editor/project_settings_editor.cpp

@@ -1007,8 +1007,12 @@ void ProjectSettingsEditor::_copy_to_platform_about_to_show() {
 	presets.insert("pvrtc");
 	presets.insert("debug");
 	presets.insert("release");
+	presets.insert("editor");
+	presets.insert("standalone");
 	presets.insert("32");
 	presets.insert("64");
+	// Not available as an export platform yet, so it needs to be added manually
+	presets.insert("Server");
 
 	for (int i = 0; i < EditorExport::get_singleton()->get_export_platform_count(); i++) {
 		List<String> p;