Hana failed to build with error C2065, error C2977, error C2913... on MSVC

**Describe**
Hi all,
Hana failed to build with error C2065, error C2977, error C2913... on MSVC on windows. Could you please help look at this issue or provide some workarounds? Thanks in advance.

**Steps to reproduce**

1. open VS2019 x64 tools command
2. git clone https://github.com/boostorg/hana F:\gitP\boostorg\hana
3. cd F:\gitP\boostorg\hana & mkdir build_amd64 & cd F:\gitP\boostorg\hana\build_amd64
4. cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_SYSTEM_VERSION=10.0.18362.0 -DBOOST_ROOT=F:\tools\boost_1_70_0\x64\boost -DBOOST_INCLUDEDIR=F:\tools\boost_1_70_0\x64 -DCMAKE_CXX_FLAGS="/EHsc /Zc:ternary /bigobj" -DBOOST_HANA_ENABLE_STRING_UDL=false ..
5. msbuild /m /p:Platform=x64 /p:Configuration=Release Boost.Hana.sln /t:Rebuild

**log:**
[build (4).log](https://github.com/boostorg/hana/files/10191290/build.4.log)
F:\gitP\boostorg\hana\example\adapt_adt.cpp(38,1): error C2065: 'name': undeclared identifier [F:\gitP\boostorg\hana\build_amd64\example\example.adapt_adt.vcxproj]
F:\gitP\boostorg\hana\example\adapt_adt.cpp(38,1): error C2977: 'boost::hana::accessors_impl': too many template arguments [F:\gitP\boostorg\hana\build_amd64\example\example.adapt_adt.vcxproj]
F:\gitP\boostorg\hana\example\adapt_adt.cpp(41,1): error C2913: explicit specialization; 'boost::hana::accessors_impl' is not a specialization of a class template [F:\gitP\boostorg\hana\build_amd64\example\example.adapt_adt.vcxproj]
F:\gitP\boostorg\hana\include\boost/hana/concept/struct.hpp(26,25): error C3203: 'accessors_impl': unspecialized class template can't be used as a template argument for template parameter 'Method', expected a real type [F:\gitP\boostorg\hana\build_amd64\example\example.adapt_adt.vcxproj]
F:\gitP\boostorg\hana\include\boost/hana/accessors.hpp(33,20): error C2825: 'Accessors': must be a class or namespace when followed by '::' [F:\gitP\boostorg\hana\build_amd64\example\example.adapt_adt.vcxproj]
40>F:\gitP\boostorg\hana\include\boost/hana/accessors.hpp(33,31): error C2510: 'Accessors': left of '::' must be a class/struct/union [F:\gitP\boostorg\hana\build_amd64\example\example.adapt_adt.vcxproj]
40>F:\gitP\boostorg\hana\include\boost/hana/accessors.hpp(33,1): error C3889: call to object of class type 'boost::hana::apply_t': no matching call operator found

**Versions and configuration**
VS version: VS2019(16.11.20)
Operating system: windows server 2019
The commit is 944f717

Reproduce the failure with the listed VS2019, CMake, Boost, and MSBuild commands, then inspect example/adapt_adt.cpp alongside include/boost/hana/concept/struct.hpp and include/boost/hana/accessors.hpp. Compare the reported template errors with the commit 944f717 and verify the result by rebuilding Boost.Hana.sln successfully on the stated configuration.

Written by the indexing model from the issue text.