[SYCL] Fix self-contained-headers tests on Win

Regressed after intel#20029, similarly to
the build itself. The build was fixed earlier in
intel#20057, but that wasn't enough to fix
`check-sycl` on Win. Do it here.

Author: aelovikov-intel

sycl/include/sycl/info/info_desc.hpp

@@ -22,6 +22,7 @@
 
 #include <sycl/range.hpp>
 
+#include <string>
 #include <vector>
 
 // This is used in trait .def files when there isn't a corresponding backend