fix(types) update hand-crafted types

fix: corrected error message (see 6810839edc)

JitsiConference.js

@@ -749,7 +749,7 @@ JitsiConference.prototype.end = function() {
         return;
     }
     if (!this.room) {
-        throw new Error('The conference has been already left');
+        throw new Error('You have already left the conference');
     }
 
     this.room.end();

types/hand-crafted/JitsiConference.d.ts

@@ -31,6 +31,10 @@ export default class JitsiConference {
   isP2PEnabled: () => boolean;
   isP2PTestModeEnabled: () => boolean;
   leave: ( reason?: string ) => Promise<unknown>; // TODO:
+  isEndConferenceSupported: () => boolean;
+  end: () => void;
+  getActiveMediaSession: () => JingleSessionPC | undefined;
+  getMediaSessions: () => JingleSessionPC[];
   getName: () => string;
   getConnection: () => JitsiConnection;
   isAuthEnabled: () => boolean;

types/hand-crafted/modules/xmpp/ChatRoom.d.ts

@@ -62,4 +62,5 @@ export default class ChatRoom extends Listenable {
   onMute: ( iq: unknown ) => void; // TODO:
   clean: () => void;
   leave: ( reason?: string ) => Promise<unknown>; // TODO:
+  end: () => void;
 }