gh-99633: Add context manager support to `contextvars.Context`#99634

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rhansen wants to merge 14 commits intopython:mainfrom

rhansen:contextvars-context-manager

Commits on Oct 1, 2024

gh-124872: Back up exception before calling PyContext_WatchCallback
rhansen
committed
gh-124872: Change PyContext_WatchCallback return type to void
rhansen
committed
gh-124872: Move PyThreadState to first argument for consistency
rhansen
committed

Commits on Oct 10, 2024