Fix `mpsc::SyncSender` spinning behavior#106701

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bors merged 3 commits intorust-lang:masterfrom ibraheemdev:sync-sender-spin

Jan 14, 2023

+49-33

Commits on Jan 11, 2023

Commits on Jan 12, 2023

rework and document backoff behavior of sync::mpsc
ibraheemdev
committed