Clarify init behavior for 0.76

[cortinico]

Summary: The init command should still keep on working till 2024-12-31

This handles this scenario as currently npx react-native@next init is broken.

Changelog: [Internal] [Changed] - Clarify init behavior for 0.76

Reviewed By: huntie

Differential Revision: D62958747

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D62958747

[facebook-github-bot]

This pull request has been merged in facebook/react-native@2524c8eb720ee11b5f5d06a096946da5ed92d719.

[react-native-bot]

This pull request was successfully merged by @cortinico in 2524c8eb720ee11b5f5d06a096946da5ed92d719

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