dillon1000/react

High pri - ensure we call timed out callbacks in schedule (#12857)

**what is the change?:**
Fix a typo which caused timed out callbacks to not be called.

**why make this change?:**
This is a bug caught by tests I'm in the process of writing, and we
should fix it asap.

**test plan:**
Tests in a WIP PR - will push and share the WIP test in comments on this
PR.