_qt_internal_create_command_script fails on windows if spaces present

_qt_internal_create_command_script adds "cmd /c" if building on windows,

this does not work if the command contains spaces.

In particular the mqtt/module_includes test fails on windows with

command not found of "C:\Program"

A potential fix is:

if(CMAKE_HOST_WIN32)
         # It's necessary to call actual test inside 'cmd.exe', because 'execute_process' uses
         # SW_HIDE to avoid showing a console window, it affects other GUI as well.
         # See https://gitlab.kitware.com/cmake/cmake/-/issues/17690 for details.
        #
        # We add 'call' to be able to handle arguments with spaces
        set(extra_runner "cmd /c call")
endif()