CMake 3.25 changed the way PDB generation is handled by only enabling
it for Debug and RelWithDebInfo builds, which prohibits generation of
fully optimized builds with associated symbols (which is MSVC's
default).
If configuring with CMake 3.25 or above, enable this globally for builds
using MSVC and fall back to embedded debug information for anything else
(which would probably be clang-cl).
