Reapply "Try namespace mac runners (#47675)" (#47721) (#47727)

This reverts commit c50120199f4211d6bcbd3fb191b710166e34d9c7.

Closes #ISSUE

Release Notes:

- N/A
e868446ea2Conrad Irwin committed on 1/27/2026, 5:02:52 AM· committed by GitHubparentd0c3b33
13 files changedLine totals unavailable