Move to 1ES engineering pools
## PR Checklist
* [x] Closes#10734
* [x] I work here
* [x] If the builds still work, the tests pass. (release and PR builds...)
## Validation Steps Performed
- [x] Run the builds associated with this PR
- [x] Force run a release build off this branch
- [x] Force run a PGO training build off this branch
This pull request switches us to the new WinDev scaleset agent pool. It
should be faster than the hosted pool, and the larger disks allow us to
get rid of our PCH cleanup step.
* split code format check into its own job
* Update build/pipelines/templates/check-formatting.yml
Co-Authored-By: Dustin L. Howett (MSFT) <duhowett@microsoft.com>
* fix result check
