Regression: Add optional chaining to possibly undefined fields (#24033)

app/ui/client/lib/chatMessages.js

@@ -594,7 +594,8 @@ export class ChatMessages {
 
 	onDestroyed(rid, tmid) {
 		UserAction.cancel(rid);
-		if (this.input.parentElement?.classList.contains('editing') === true) {
+		// TODO: check why we need too many ?. here :(
+		if (this.input?.parentElement?.classList.contains('editing') === true) {
 			if (!tmid) {
 				this.clearCurrentDraft();
 				this.clearEditing();

app/ui/client/views/app/room.js

@@ -180,7 +180,7 @@ Template.roomOld.helpers({
 		const { rid } = Template.instance();
 		const room = Rooms.findOne(rid, { fields: { sysMes: 1 } });
 		const hideSettings = settings.collection.findOne('Hide_System_Messages') || {};
-		const settingValues = Array.isArray(room.sysMes) ? room.sysMes : hideSettings.value || [];
+		const settingValues = Array.isArray(room?.sysMes) ? room.sysMes : hideSettings.value || [];
 		const hideMessagesOfType = new Set(settingValues.reduce((array, value) => [...array, ...value === 'mute_unmute' ? ['user-muted', 'user-unmuted'] : [value]], []));
 		const query = {
 			rid,