For anyone facing an `internal-error` using Firebase Auth trying to send an email with actionCodeSettings on iOS

firebase-project-updater.js

const admin = require('firebase-admin');

admin.initializeApp({
	// See https://firebase.google.com/docs/admin/setup/#initialize_the_sdk_in_non-google_environments on
	// how to acquire credentials for your Firebase project
	credential: admin.credential.cert(require("./credentials.json"))
});

const updateRequest = {
	mobileLinksConfig: {
		domain: 'HOSTING_DOMAIN'
	}
}

/**
  This is a simple trick to force your Firebase project use Firebase Hosting instead of Firebase Dynamic
  Links. For some reason since Google already started deprecating FDL if your project is not using it you
  will receive internal-error when trying to send Email using `sendPasswordResetEmail` or similar functions.
  After you have executed this script, issue will be resolved
  
  The funniest shit is that Firebase Console does not have it in UI yet and I spent 3 hours trying to 
  find a workaround :):):)
*/
admin.auth().projectConfigManager().updateProjectConfig(updateRequest);