Merge topic 'module-mapper-clang-transitive'

57ef353d22 cmExperimental: refresh the C++ modules UUID
7b05724ac8 cmCxxModuleMapper: give transitive usages to Clang as well
c9df4568da cmCxxModuleMapper: factor out transitive usage computation
71f1483aac Tests/RunCMake/CXXModules: require transitive usages
e39b6ebc19 cmCxxModuleMapper: use a `char` for streaming single bytes

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !8610