Merge topic 'cxx23'

a0fabc4769 cmGlobalGeneratorFactory: Provide complete cmGlobalGenerator to deleter
85627a93c9 cmCTestBuildCommand: Avoid requiring complete cmGlobalGenerator type publicly
641c02a3ce cmList: Avoid using operator-> on input iterator
e4483b8871 Tests: Avoid compiling call to dap::optional<dap::string>(nullptr)

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Acked-by: scivision <michael@scivision.dev>
Merge-request: !8950