Set CMP0094 to ON also on APPLE

[traversaro]

Let's try if this fixes #1541 .

[traversaro]

Still failing:

CMake Error at /Users/runner/miniconda3/envs/test/share/cmake-3.27/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find Python3 (missing: Python3_LIBRARIES Development
  Development.Embed) (found version "3.12.0")
Call Stack (most recent call first):
  /Users/runner/miniconda3/envs/test/share/cmake-3.27/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
  /Users/runner/miniconda3/envs/test/share/cmake-3.27/Modules/FindPython/Support.cmake:3824 (find_package_handle_standard_args)
  /Users/runner/miniconda3/envs/test/share/cmake-3.27/Modules/FindPython3.cmake:545 (include)
  CMakeLists.txt:41 (find_package)

[traversaro]

Superseded by #1546 .