Autotranslate DDP Method Exposes Private Messages Without Authentication or Room Access Check

Summary

The Rocket.Chat DDP method autoTranslate.translateMessage accepts a client-supplied IMessage object and passes it directly to translateMessage() without checking Meteor.userId() or verifying room membership. Any authenticated DDP user can read the content of any message by ID from any room (private channels, DMs, E2EE rooms) by calling this method. The parallel REST endpoint was fixed with canAccessRoomAsync but the DDP method was missed.