onnxruntime

Revert "ThreadPool: Spend less time busy waiting. (#21545)" (#22350)

This reverts commit 4e15b229a0ab8334ba7639b03b42c15edb968613.

Reason: We are seeing an increase in the number of deadlocks after this
PR. We have a release coming up next week and do not have enough time to
investigate the root cause, hence reverting this PR temporarily.
Moreover, this is causing an increase int he binary size.

### Description
We are seeing an [increase in the number of
deadlocks](https://github.com/microsoft/onnxruntime/pull/22315#issuecomment-2394821893)
after this PR. We have a release coming up next week and do not have
enough time to investigate the root cause, hence reverting this PR
temporarily.

### Motivation and Context
See above.