Facebook iOS Bindings are outdated

### Description

Currently bound version: 16.3.1
Current version facebook offers: 18.0.0

In addition to several new features, the use of 16.3.1 is a blocker for many, because it lacks of privacy manifest files, which are required by Apple in order to publish new apps to the Apple App Store.

### Steps to Reproduce

Try to publish a new app to Apple App Store with 16.3.1 as dependency.

### Link to public reproduction project repository

_No response_

### Environment

- OS: macOS
- .NET MAUI: 9.0.301
- Target platforms: iOS

该 issue 未列出任何文件、测试或入口点。首先定位 Facebook iOS binding 及其依赖项版本，然后将其与 Facebook 的 18.0.0 release 进行比较，并验证 .NET MAUI iOS 应用能否满足 App Store privacy-manifest requirements。完成的标准是 binding 已更新，并且发布阻碍已解决。

由索引模型根据 Issue 内容生成。