pub fn maybe_log_try_lock_telemetry()Expand description
Emit a periodic telemetry summary if new try_lock() failures have been recorded
since the last call.
This is designed to be called from about_to_wait (once per event-loop iteration)
so that lock-contention pressure is surfaced in the debug log without generating
per-failure log spam at higher rates. The log entry is only written when at least
one new failure occurred since the previous call.