[FIX] Messages on thread panel were receiving wrong context/subscription (#14404)

app/threads/client/flextab/thread.js

@@ -51,7 +51,7 @@ Template.thread.helpers({
 		return Threads.find({ tmid }, { sort });
 	},
 	messageContext() {
-		const result = messageContext.apply(this);
+		const result = messageContext.call(this, { rid: this.mainMessage.rid });
 		return {
 			...result,
 			settings: {

app/threads/client/flextab/threads.js

@@ -38,7 +38,7 @@ Template.threads.events({
 
 Template.threads.helpers({
 	subscription() {
-		return Template.instance().data.subscription;
+		return Template.currentData().subscription;
 	},
 	doDotLoadThreads() {
 		return Template.instance().state.get('close');
@@ -74,6 +74,7 @@ Template.threads.onCreated(async function() {
 		thread: msg,
 	});
 
+	this.rid = rid;
 
 	this.incLimit = () => {
 

app/ui-utils/client/lib/messageContext.js

@@ -6,8 +6,7 @@ import { hasPermission } from '../../../authorization/client';
 import { settings } from '../../../settings/client';
 import { getUserPreference } from '../../../utils/client';
 
-export function messageContext() {
-	const { rid } = Template.instance();
+export function messageContext({ rid } = Template.instance()) {
 	const uid = Meteor.userId();
 	return {
 		u: Users.findOne({ _id: uid }, { fields: { name: 1, username: 1 } }),
@@ -22,6 +21,7 @@ export function messageContext() {
 			fields: {
 				name: 1,
 				autoTranslate: 1,
+				rid: 1,
 			},
 		}),
 		settings: {