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/react-native/React/Base/RCTManagedPointer.mm

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "RCTManagedPointer.h"
+
+@implementation RCTManagedPointer {
+  std::shared_ptr<void> _pointer;
+}
+
+- (instancetype)initWithPointer:(std::shared_ptr<void>)pointer
+{
+  if (self = [super init]) {
+    _pointer = std::move(pointer);
+  }
+  return self;
+}
+
+- (void *)voidPointer
+{
+  return _pointer.get();
+}
+
+@end