vm-msvc-windows is broken by unwinding_records change

[aam]

https://dart.googlesource.com/sdk/+/386a87a8905c48342e1bb9dcbe0ff693690468a7 broke vm-msvc-windows
https://ci.chromium.org/ui/p/dart/builders/ci.sandbox/vm-msvc-windows/4/overview

[1302/2702] CXX obj/runtime/vm/libdart_vm_jit.unwinding_records_win.obj
FAILED: obj/runtime/vm/libdart_vm_jit.unwinding_records_win.obj 
C:/b/s/w/ir/cache/builder/sdk/buildtools/ninja/ninja -t msvc -e environment.x64 -- "C:\b\s\w\ir\kitchen-checkout\depot_tools\win_toolchain\vs_files\1023ce2e82\VC\Tools\MSVC\14.29.30133\bin\Hostx64\x64/cl.exe"  /nologo /showIncludes /FC @obj/runtime/vm/libdart_vm_jit.unwinding_records_win.obj.rsp /c ../../runtime/vm/unwinding_records_win.cc /Foobj/runtime/vm/libdart_vm_jit.unwinding_records_win.obj /Fdobj/runtime/vm/libdart_vm_jit_cc.pdb
C:\b\s\w\ir\cache\builder\sdk\runtime\vm\unwinding_records_win.cc(105): error C2440: 'reinterpret_cast': cannot convert from 'dart::uword' to 'DWORD64'
C:\b\s\w\ir\cache\builder\sdk\runtime\vm\unwinding_records_win.cc(105): note: Conversion is a valid standard conversion, which can be performed implicitly or by use of static_cast, C-style cast or function-style cast
C:\b\s\w\ir\cache\builder\sdk\runtime\vm\unwinding_records_win.cc(106): error C2440: 'reinterpret_cast': cannot convert from 'dart::uword' to 'DWORD64'
C:\b\s\w\ir\cache\builder\sdk\runtime\vm\unwinding_records_win.cc(106): note: Conversion is a valid standard conversion, which can be performed implicitly or by use of static_cast, C-style cast or function-style cast
C:\b\s\w\ir\cache\builder\sdk\runtime\vm\unwinding_records_win.cc(100): error C2660: 'RtlAddGrowableFunctionTable': function does not take 4 arguments
C:\b\s\w\ir\kitchen-checkout\depot_tools\win_toolchain\vs_files\1023ce2e82\Windows Kits\10\Include\10.0.20348.0\um\winnt.h(20719): note: see declaration of 'RtlAddGrowableFunctionTable'