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/preact/devtools/src/devtools.js

@@ -0,0 +1,21 @@
+import { Component, Fragment, options } from 'preact';
+
+export function initDevTools() {
+	const globalVar =
+		typeof globalThis !== 'undefined'
+			? globalThis
+			: typeof window !== 'undefined'
+				? window
+				: undefined;
+
+	if (
+		globalVar !== null &&
+		globalVar !== undefined &&
+		globalVar.__PREACT_DEVTOOLS__
+	) {
+		globalVar.__PREACT_DEVTOOLS__.attachPreact('10.24.2', options, {
+			Fragment,
+			Component
+		});
+	}
+}