Fix compile error with _HAS_STATIC_RTTI=0

[ALF-ONE]

Fix compile error with _HAS_STATIC_RTTI=0
See: https://github.com/microsoft/STL/blob/main/stl/inc/any#L15

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• Changes are described in the pull request, or an existing issue is referenced.
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[nlohmann]

Can you please add some documentation to this (see https://github.com/nlohmann/json/blob/develop/docs/mkdocs/docs/api/macros/json_no_io.md for example). Furthermore, is there an issue that this MR is closing?

[coveralls]

coverage: 100.0%. remained the same when pulling dbc6a1d on ALF-ONE:develop into c71ecde on nlohmann:develop.

[nlohmann]

Please update to the latest develop to have a fixed CI.

[nlohmann]

Thanks!