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/lib0/dist/sha256.node.cjs

@@ -0,0 +1,17 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var node_crypto = require('node:crypto');
+
+/**
+ * @param {Uint8Array} data
+ */
+const digest = data => {
+  const hasher = node_crypto.createHash('sha256');
+  hasher.update(data);
+  return hasher.digest()
+};
+
+exports.digest = digest;
+//# sourceMappingURL=sha256.node.cjs.map