Automatic merge from submit-queue (batch tested with PRs 38730, 37299)

[scheduling] Moved node affinity from annotations to api fields. #35518

Converted node affinity from annotations to api fields

Fixes: #35518 
Related: #25319
Related: #34508

**Release note**:
```release-note
Node affinity has moved from annotations to api fields in the pod spec.  Node affinity that is defined in the annotations will be ignored.
```