JDK-8302817 identified why disabling RTTI for Hotspot with MSVC caused a subset of serviceability agent tests to fail. JDK-8302817 was also able to identify a feasible workaround. We should move forward with disabling RTTI when building with MSVC. This drops the size of jvm.dll by 1 MB and makes MSVC match GCC/Clang as we also disable RTTI there. This ensures behavior consistency and that we do not accidently rely on RTTI for Windows-specific code.