[docs] adding sendAccessibilityEvent to AccNodeInfo

[fabOnReact]

https://github.com/facebook/react-native/pull/34969 fixes https://github.com/facebook/react-native/issues/30860 fixes https://github.com/facebook/react-native/issues/30097

Related Links:

• https://github.com/fabriziobertoglio1987/react-native/commit/639daf8641b988aae80c26007c1b4a7f8ee0e17d
• relevant docs updates https://github.com/facebook/react-native-website/pull/3488 https://github.com/facebook/react-native/commit/455ca8cfaf8060def528425e2a58b19930009fdd
• adds sendAccessibilityEvent to renderer https://github.com/react-native-community/discussions-and-proposals/issues/72 https://github.com/facebook/react/pull/20554 https://github.com/facebook/react/compare/main...fabriziobertoglio1987:react:adding-send-accessibility-event-to-ref?expand=1
• explanation of UIManager.measure implementation

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[fabOnReact]

Related https://github.com/facebook/react-native-website/pull/3488 https://github.com/facebook/react-native/commit/455ca8cfaf8060def528425e2a58b19930009fdd https://github.com/facebook/react/pull/20554