[0.85] Backport RedBox 2.0 for iOS (#56640)

Summary:
Pull Request resolved: #56640

Cherry-pick of 13 commits from `main` (and 1 from `0.83-stable`) adding the experimental RedBox 2.0 implementation for iOS to `0.85-stable`, plus supporting build fixes.

Changes included:
- Add per-platform `redBoxV2IOS` / `redBoxV2Android` feature flags
- Extract `RCTRedBoxController` from `RCTRedBox.mm` (#56509)
- Add LogBox-styled error overlay (#56550)
- Add shared C++ error parser and ANSI renderer (#56553)
- Show syntax-highlighted code frames (#56551)
- Mark all errors as retryable (#56552)
- Auto-reload on retryable errors (#56549)
- Attempt to clear RedBox by automatically reloading on Metro file change (#56554)
- Fix truncated filenames in call stack frames (#56565)
- Guard tvOS-unavailable APIs in `RCTRedBox2Controller` (#56568)
- Fix C++ syntax in Objective-C header breaking React module build (#56569)
- Add `redbox` subspec to `React-debug` pod (#56584) — from `0.83-stable`, needed for static library builds
- Fix React-CoreModules missing `React-featureflags` header path under `use_frameworks!` (#56591)

All RedBox 2.0 features gated behind the `redBoxV2IOS` feature flag (disabled by default).

Changelog: [Internal]

Test Plan:
- CI
- Feature is behind `redBoxV2IOS` flag, disabled by default

Co-authored-by: Moti Zilberman <moti@meta.com>

Author: fabriziocucci

packages/react-native/Package.swift

@@ -93,6 +93,7 @@ let reactRendererConsistency = RNTarget(
 let reactDebug = RNTarget(
   name: .reactDebug,
   path: "ReactCommon/react/debug",
+  excludedPaths: ["tests", "redbox/tests"],
   dependencies: [.reactNativeDependencies]
 )
 /// React-jsi.podspec
@@ -385,7 +386,7 @@ let reactCoreModules = RNTarget(
   name: .reactCoreModules,
   path: "React/CoreModules",
   excludedPaths: ["PlatformStubs/RCTStatusBarManager.mm"],
-  dependencies: [.reactNativeDependencies, .jsi, .yoga, .reactTurboModuleCore]
+  dependencies: [.reactNativeDependencies, .jsi, .yoga, .reactTurboModuleCore, .reactFeatureFlags]
 )
 
 /// React-runtimeCore.podspec

packages/react-native/React/CoreModules/RCTJscSafeUrl+Internal.h

@@ -0,0 +1,23 @@
+/*
+ * 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 <Foundation/Foundation.h>
+
+/**
+ * Converts between standard URLs and JSC-safe URLs.
+ *
+ * JSC (JavaScriptCore) strips query strings from source URLs in stack traces
+ * as of iOS 16.4. Metro works around this by encoding the query string into
+ * the URL path. These methods convert between the two formats.
+ */
+@interface RCTJscSafeUrl : NSObject
+
++ (nonnull NSString *)normalUrlFromJscSafeUrl:(nonnull NSString *)url;
++ (nonnull NSString *)jscSafeUrlFromNormalUrl:(nonnull NSString *)url;
++ (BOOL)isJscSafeUrl:(nonnull NSString *)url;
+
+@end

packages/react-native/React/CoreModules/RCTJscSafeUrl.mm

@@ -0,0 +1,38 @@
+/*
+ * 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 "RCTJscSafeUrl+Internal.h"
+
+#import <React/RCTDefines.h>
+#import <react/debug/redbox/JscSafeUrl.h>
+
+#if RCT_DEV_MENU
+
+using facebook::react::unstable_redbox::isJscSafeUrl;
+using facebook::react::unstable_redbox::toJscSafeUrl;
+using facebook::react::unstable_redbox::toNormalUrl;
+
+@implementation RCTJscSafeUrl
+
++ (NSString *)normalUrlFromJscSafeUrl:(NSString *)url
+{
+  return [NSString stringWithUTF8String:toNormalUrl(url.UTF8String).c_str()];
+}
+
++ (NSString *)jscSafeUrlFromNormalUrl:(NSString *)url
+{
+  return [NSString stringWithUTF8String:toJscSafeUrl(url.UTF8String).c_str()];
+}
+
++ (BOOL)isJscSafeUrl:(NSString *)url
+{
+  return isJscSafeUrl(url.UTF8String);
+}
+
+@end
+
+#endif

packages/react-native/React/CoreModules/RCTRedBox+Internal.h

@@ -0,0 +1,42 @@
+/*
+ * 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/RCTDefines.h>
+#import <UIKit/UIKit.h>
+
+#if RCT_DEV_MENU
+
+@class RCTJSStackFrame;
+
+@protocol RCTRedBoxControllerActionDelegate <NSObject>
+
+- (void)redBoxController:(UIViewController *)redBoxController openStackFrameInEditor:(RCTJSStackFrame *)stackFrame;
+- (void)reloadFromRedBoxController:(UIViewController *)redBoxController;
+- (void)loadExtraDataViewController;
+
+@end
+
+@protocol RCTRedBoxControlling <NSObject>
+
+@property (nonatomic, weak) id<RCTRedBoxControllerActionDelegate> actionDelegate;
+
+- (void)showErrorMessage:(NSString *)message
+               withStack:(NSArray<RCTJSStackFrame *> *)stack
+                isUpdate:(BOOL)isUpdate
+             errorCookie:(int)errorCookie;
+
+- (void)dismiss;
+
+@end
+
+@protocol RCTRedBox2Controlling <RCTRedBoxControlling>
+
+@property (nonatomic, strong, nullable) NSURL *bundleURL;
+
+@end
+
+#endif