Automatic merge from submit-queue

Rename ScheduledJobs to CronJobs

I went with @smarterclayton idea of registering named types in schema. This way we can support both the new (CronJobs) and old (ScheduledJobs) resource name. Fixes #32150.

fyi @erictune @caesarxuchao @janetkuo 

Not ready yet, but getting close there...

**Release note**:
```release-note
Rename ScheduledJobs to CronJobs.
```