fix: force os.sdk to empty on Darwin (#2632)

cmake/conan_provider.cmake

@@ -84,6 +84,10 @@ function(detect_os os os_api_level os_sdk os_subsystem os_version)
                     set(_os_sdk "watch${apple_platform_suffix}")
                 endif()
             endif()
+            # Macos does not support os.sdk
+            if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+                set(_os_sdk "")
+            endif()
             if(DEFINED os_sdk)
                 message(STATUS "CMake-Conan: cmake_osx_sysroot=${CMAKE_OSX_SYSROOT}")
                 set(${os_sdk} ${_os_sdk} PARENT_SCOPE)