FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/https-proxy-agent/dist/parse-proxy-response.d.ts

@@ -0,0 +1,15 @@
+/// <reference types="node" />
+/// <reference types="node" />
+/// <reference types="node" />
+import { IncomingHttpHeaders } from 'http';
+import { Readable } from 'stream';
+export interface ConnectResponse {
+    statusCode: number;
+    statusText: string;
+    headers: IncomingHttpHeaders;
+}
+export declare function parseProxyResponse(socket: Readable): Promise<{
+    connect: ConnectResponse;
+    buffered: Buffer;
+}>;
+//# sourceMappingURL=parse-proxy-response.d.ts.map