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/Tests/Mounting/RCTComponentViewRegistryTests.mm

@@ -0,0 +1,87 @@
+/*
+ * 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 <React/RCTComponentViewRegistry.h>
+#import <React/RCTViewComponentView.h>
+#import <XCTest/XCTest.h>
+
+@interface RCTComponentViewRegistryTests : XCTestCase
+@end
+
+using namespace facebook::react;
+
+@implementation RCTComponentViewRegistryTests {
+  RCTComponentViewRegistry *_componentViewRegistry;
+}
+
+- (void)setUp
+{
+  [super setUp];
+  _componentViewRegistry = [RCTComponentViewRegistry new];
+  [_componentViewRegistry.componentViewFactory registerComponentViewClass:[RCTViewComponentView class]];
+}
+
+- (void)testComponentViewDescriptorWithTag
+{
+  XCTAssertThrows(
+      ^{
+        Tag nonExistingTag = 12;
+        [self->_componentViewRegistry componentViewDescriptorWithTag:nonExistingTag];
+      }(),
+      @"Should throw: `Attempt to query unregistered component`");
+
+  Tag existingTag = 2;
+  auto newViewDescriptor = [_componentViewRegistry
+      dequeueComponentViewWithComponentHandle:[RCTViewComponentView componentDescriptorProvider].handle
+                                          tag:existingTag];
+
+  XCTAssertNoThrow(^{
+    auto componentDescriptor = [self->_componentViewRegistry componentViewDescriptorWithTag:existingTag];
+    XCTAssertEqual(newViewDescriptor, componentDescriptor);
+  }());
+}
+
+- (void)testFindComponentViewWithTag
+{
+  Tag nonExistingTag = 12;
+  XCTAssertNil([_componentViewRegistry findComponentViewWithTag:nonExistingTag]);
+
+  Tag existingTag = 2;
+  auto newViewDescriptor = [_componentViewRegistry
+      dequeueComponentViewWithComponentHandle:[RCTViewComponentView componentDescriptorProvider].handle
+                                          tag:existingTag];
+
+  XCTAssertEqual(newViewDescriptor.view, [_componentViewRegistry findComponentViewWithTag:existingTag]);
+}
+
+- (void)testDequeueAndEnqueue
+{
+  Tag existingTag = 2;
+  auto newViewDescriptor = [_componentViewRegistry
+      dequeueComponentViewWithComponentHandle:[RCTViewComponentView componentDescriptorProvider].handle
+                                          tag:existingTag];
+
+  XCTAssertThrows(
+      ^{
+        [self->_componentViewRegistry
+            dequeueComponentViewWithComponentHandle:[RCTViewComponentView componentDescriptorProvider].handle
+                                                tag:existingTag];
+      }(),
+      @"Should throw: `Attempt to dequeue already registered component`");
+
+  XCTAssertThrows(
+      ^{
+        Tag nonExistingTag = 12;
+        [self->_componentViewRegistry
+            enqueueComponentViewWithComponentHandle:[RCTViewComponentView componentDescriptorProvider].handle
+                                                tag:nonExistingTag
+                            componentViewDescriptor:newViewDescriptor];
+      }(),
+      @"Should throw: `Attempt to enqueue unregistered component`");
+}
+
+@end