i18next / react-i18next / 19288288664

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fix: add i18n wrapper for React Compiler and React.memo compatibility #1863 (#1884)

Creates a new object wrapper for the i18n instance that changes reference
when language properties change. This ensures React Compiler and React.memo
can properly detect changes and trigger re-renders.

The wrapper maintains full API compatibility by delegating to the original
instance via prototype chain. A non-enumerable __original property is added
for test verification.

Fixes compatibility issues with babel-plugin-react-compiler where accessing
i18n.language inside callbacks was not triggering re-renders despite the
component re-rendering.

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