Merge changes from topic "2024-06-19-aosp-future-cp" into aosp-main-future

* changes:
  [Ravenwood] Make Os.stat() family available
  [Ravenwood] Relax the test method name validator
  Remove redundant genrules
  Rename nano prot classes to avoid conflict
  Move ravenwood-runtime ravenwood-utils to f/b/r