[WIP] Update React Native from 0.73 to 0.81

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

帮我将 example 的 react-native 从 0.73 升级到 0.81

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[JimmyDaddy]

@copilot 帮我将 example 的 react-native 从 0.73 升级到 0.81

[JimmyDaddy]

@copilot 帮我将 example 的 react-native 从 0.73 升级到 0.81