Update spin-wait pause/yield normalization (#55295)

Update spin-wait pause/yield normalization (#55295)

Update spin-wait pause/yield normalization

- Modified the measurement to use much less time and to remeasure periodically to reduce CPU usage during startup
- Each measurement does a low-microsecond-level measurement of pause/yield times
- Some small amount of history of recent measurements is retained and used to for now take the lowest measurement for normalization
- Measurements are done lazily, and at most every few seconds another measurement is taken
- Added a profiling event that includes info about a measurement and the established value from recent measurements that is used for normalization