How to Resolve 'FirebaseCoreInternal.modulemap not found' Error in React Native iOS Simulator Builds?

I'm encountering an Xcode build failure when running my React Native project on iOS simulators. The build fails with an error related to the missing FirebaseCoreInternal.modulemap, although it succeeds using the “My Mac (Designed for iPhone)” option.

I've tried the following fixes:

1. Deleting Podfile.lock
2. Running pod install
3. Testing on different simulators with iOS version 15.5 and above

Below is my Podfile, which includes the Firebase pods and standard React Native configuration:

RUBYCopied
project 'app.xcodeproj'

# Resolve react_native_pods.rb with node to allow for hoisting
require Pod::Executable.execute_command("node", ["-p",
                                                 'require.resolve(
    "react-native/scripts/react_native_pods.rb",
    {paths: [process.argv[1]]},
  )', __dir__]).strip

platform :ios, '15.5'
prepare_react_native_project!

# If you are using a `react-native-flipper` your iOS build will fail when `NO_FLIPPER=1` is set.
# because `react-native-flipper` depends on (FlipperKit,...) that will be excluded
#
# To fix this you can also exclude `react-native-flipper` using a `react-native.config.js`
# ```js
# module.exports = {
#   dependencies: {
#     ...(process.env.NO_FLIPPER ? { 'react-native-flipper': { platforms: { ios: null } } } : {}),
# ```
flipper_config = ENV["NO_FLIPPER"] == "1" ? FlipperConfiguration.disabled : FlipperConfiguration.enabled

linkage = ENV["USE_FRAMEWORKS"]
if linkage != nil
  Pod::UI.puts "Configuring Pod with #{linkage}ally linked Frameworks".green
  use_frameworks! :linkage => :static
  $RNFirebaseAsStaticFramework = true
end

target "app" do
  config = use_native_modules!

  pod "Firebase", :modular_headers => true
  pod "FirebaseCoreInternal", :modular_headers => true
  pod "GoogleUtilities", :modular_headers => true
  pod "FirebaseCore", :modular_headers => true

  use_react_native!(
    :path => config[:reactNativePath],
    # Enables Flipper.
    #
    # Note that if you have use_frameworks! enabled, Flipper will not work and
    # you should disable the next line.
    # :flipper_configuration => flipper_config, 
    # An absolute path to your application root.
    :app_path => "#{Pod::Config.instance.installation_root}/..",
  )

  target "appTests" do
    inherit! :complete
    # Pods for testing
  end

  post_install do |installer|
    # https://github.com/facebook/react-native/blob/main/packages/react-native/scripts/react_native_pods.rb#L197-L202
    react_native_post_install(
      installer,
      config[:reactNativePath],
      :mac_catalyst_enabled => false,
    )
  end
end

Additionally, here is my AppDelegate file where Firebase is configured:

OBJCCopied
#import "AppDelegate.h"
#import <Firebase.h>
#import <IntercomModule.h> 


#import <React/RCTBundleURLProvider.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  [FIRApp configure];
  self.moduleName = @"app";
  // You can add your custom initial props in the dictionary below.
  // They will be passed down to the ViewController used by React Native.
  self.initialProps = @{};
  [IntercomModule initialize:@"ios_sdk-" withAppId:@<...> 

I'm looking for guidance on how to successfully build and run my app on iOS simulators. Any help to overcome the missing FirebaseCoreInternal.modulemap error would be greatly appreciated.