Enable Multiple Sheet Presentation in React Native (#46333)

Summary:
Pull Request resolved: #46333

This pull request introduces enhancements to the view controller presentation logic in React Native, allowing for multiple sheets to be presented on top of each other. The current implementation restricts the presentation to a single view at a time, which limits the flexibility needed in complex applications.
The proposed changes modify the presentation behavior to always utilize the top-most view controller for presentations. This adjustment ensures that multiple sheets can be managed more effectively, without disrupting the existing application flow.
Key changes include:
Modification of the presentation logic to reference the top-most view controller.
Utilization of a recursive method to determine the top-most controller.
The changes have been thoroughly tested with both old and new interfaces and have shown to work seamlessly across different scenarios
Changelog: [Internal] Allow multiple sheets to be presented on top of each other

Reviewed By: jessebwr

Differential Revision: D62202475

fbshipit-source-id: daa0cf95edb23ea52a26441337f9a16f5475b211

packages/react-native/React/Views/RCTModalHostViewManager.m

@@ -64,9 +64,9 @@ - (void)presentModalHostView:(RCTModalHostView *)modalHostView
     if (self->_presentationBlock) {
       self->_presentationBlock([modalHostView reactViewController], viewController, animated, completionBlock);
     } else {
-      [[modalHostView reactViewController] presentViewController:viewController
-                                                        animated:animated
-                                                      completion:completionBlock];
+      [[self _topMostViewControllerFrom:[modalHostView reactViewController]] presentViewController:viewController
+                                                                                          animated:animated
+                                                                                        completion:completionBlock];
     }
   });
 }
@@ -107,6 +107,26 @@ - (void)invalidate
   _hostViews = nil;
 }
 
+#pragma mark - Private
+
+- (UIViewController *)_topMostViewControllerFrom:(UIViewController *)rootViewController
+{
+  UIViewController *topController = rootViewController;
+  while (topController.presentedViewController) {
+    topController = topController.presentedViewController;
+  }
+  if ([topController isKindOfClass:[UINavigationController class]]) {
+    UINavigationController *navigationController = (UINavigationController *)topController;
+    topController = navigationController.visibleViewController;
+    return [self _topMostViewControllerFrom:topController];
+  } else if ([topController isKindOfClass:[UITabBarController class]]) {
+    UITabBarController *tabBarController = (UITabBarController *)topController;
+    topController = tabBarController.selectedViewController;
+    return [self _topMostViewControllerFrom:topController];
+  }
+  return topController;
+}
+
 RCT_EXPORT_VIEW_PROPERTY(animationType, NSString)
 RCT_EXPORT_VIEW_PROPERTY(presentationStyle, UIModalPresentationStyle)
 RCT_EXPORT_VIEW_PROPERTY(transparent, BOOL)