fix: moment js not loading some locales

.changeset/rare-fans-shake.md

@@ -0,0 +1,5 @@
+---
+'@rocket.chat/meteor': patch
+---
+
+Fixes some locale loading issues for date-time formatting functionality.

apps/meteor/server/lib/getMomentLocale.ts

@@ -1,15 +1,23 @@
 import { Meteor } from 'meteor/meteor';
 
+const mapLocaleToMomentLocale: Record<string, string> = {
+	ug: 'ug-cn',
+	zh: 'zh-cn',
+};
+
 export async function getMomentLocale(locale: string): Promise<string | undefined> {
 	const localeLower = locale.toLowerCase();
-
-	try {
-		return Assets.getTextAsync(`moment-locales/${localeLower}.js`);
-	} catch (error) {
+	const localesPaths = [
+		`moment-locales/${localeLower}.js`,
+		`moment-locales/${String(localeLower.split('-').shift())}.js`,
+		`moment-locales/${mapLocaleToMomentLocale[localeLower]}.js`,
+	];
+	for await (const localePath of localesPaths) {
 		try {
-			return Assets.getTextAsync(`moment-locales/${String(localeLower.split('-').shift())}.js`);
+			return await Assets.getTextAsync(localePath);
 		} catch (error) {
-			throw new Meteor.Error('moment-locale-not-found', `Moment locale not found: ${locale}`);
+			continue;
 		}
 	}
+	throw new Meteor.Error('moment-locale-not-found', `Moment locale not found: ${locale}`);
 }