message: hazptr: Use WG21 P1121 function names protect and reset_protection
  Summary:
  Change the hazptr_hoklder function names get_protected and reset to (the names in [WG21 P1121](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p1121r3.pdf)) protect and reset_protection, respectively.
  The primary change is in folly/synchronization/HazptrHolder.h
diff: @@ -58,7 +58,7 @@ void DynamicQuantileStatWrapper<N>::addValue(
  const SubkeyArray subkeyArray{{std::forward<Args>(subkeys)...}};
  folly::hazptr_holder<> h;
  - auto mapPtr = h.get_protected(stats_);
  + auto mapPtr = h.protect(stats_);
  auto it = mapPtr->map.find(subkeyArray);
  if (it != mapPtr->map.end()) {
  @@ -75,12 +75,12 @@ void DynamicQuantileStatWrapper<N>::addValue(
  if (newMap) {
  delete newMap;
  }
  - mapPtr = h.get_protected(stats_);
  + mapPtr = h.protect(stats_);
  newMap = new MapHolder(*mapPtr);
  newMap->map[subkeyArray] = stat;
  } while (
  !stats_.compare_exchange_weak(mapPtr, newMap, std::memory_order_acq_rel));
  - h.reset();
  + h.reset_protection();
  mapPtr->retire();
  stat->addValue(value, now);
  }
  