Reapply "[CI] Migrate to runtimes build" (#143612)
This reverts commit 6f62979a5a5bcf70d65f23e0991a274e6df5955b.
The reapplies commit 80ea5f46df3e365a0a2112889bb91732167b6214.
That commit was reverted because it was causing compiler-rt test
failures due to tysan not having its dependencies set up properly within
CMake. That situation has since been rectified in
3cef099ceddccefca8e11268624397cde9e04af6.
Reviewers: lnihlen, rnk, gburgessiv, cmtice
Reviewed By: rnk, cmtice
Pull Request: https://github.com/llvm/llvm-project/pull/144033
