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/Fabric/RCTSurfaceRegistry.mm

@@ -0,0 +1,61 @@
+/*
+ * 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 "RCTSurfaceRegistry.h"
+
+#import <mutex>
+#import <shared_mutex>
+
+#import <React/RCTFabricSurface.h>
+
+using namespace facebook;
+
+@implementation RCTSurfaceRegistry {
+  std::shared_mutex _mutex;
+  NSMapTable<id, RCTFabricSurface *> *_registry;
+}
+
+- (instancetype)init
+{
+  if (self = [super init]) {
+    _registry = [NSMapTable mapTableWithKeyOptions:NSPointerFunctionsIntegerPersonality | NSPointerFunctionsOpaqueMemory
+                                      valueOptions:NSPointerFunctionsObjectPersonality | NSPointerFunctionsWeakMemory];
+  }
+
+  return self;
+}
+
+- (void)enumerateWithBlock:(RCTSurfaceEnumeratorBlock)block
+{
+  std::shared_lock lock(_mutex);
+  block([_registry objectEnumerator]);
+}
+
+- (void)registerSurface:(RCTFabricSurface *)surface
+{
+  std::unique_lock lock(_mutex);
+
+  ReactTag rootTag = surface.rootViewTag.integerValue;
+  [_registry setObject:surface forKey:(__bridge id)(void *)rootTag];
+}
+
+- (void)unregisterSurface:(RCTFabricSurface *)surface
+{
+  std::unique_lock lock(_mutex);
+
+  ReactTag rootTag = surface.rootViewTag.integerValue;
+  [_registry removeObjectForKey:(__bridge id)(void *)rootTag];
+}
+
+- (RCTFabricSurface *)surfaceForRootTag:(ReactTag)rootTag
+{
+  std::shared_lock lock(_mutex);
+
+  return [_registry objectForKey:(__bridge id)(void *)rootTag];
+}
+
+@end