Previously the status for a Post (or other post_types) was only exposed under the `edit` context, which doesn't really make much sense considering we support querying by post status without authentication. Originally introduced in v2.0 beta 1: 69f617d749 without any explanation in the commit message.
Props dhanendran, jnylen0, rachelbaker.
Merges [40080] to the 4.7 branch.
Fixes#39466.
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