xchar.h clashes with MSVC's format implementation (ambiguous make_wformat_args)

[gix]

Using fmt 8.0.1 with VS2022 (VC++ 14.30.30705) gives:

1>C:\dev\...\include\fmt\xchar.h(220,39): error C2668: 'fmt::v8::make_wformat_args': ambiguous call to overloaded function
1>  return vprint(f, wstring_view(fmt), make_wformat_args(args...));
1>                                      ^
1>C:\dev\...\include\fmt\xchar.h(44,54): note: could be 'fmt::v8::format_arg_store<fmt::v8::wformat_context,std::wstring_view> fmt::v8::make_wformat_args<std::wstring_view>(const std::wstring_view &)'
1>constexpr format_arg_store<wformat_context, Args...> make_wformat_args(
1>                                                     ^
1>C:\Program Files\Microsoft Visual Studio\2022\Professional\VC\Tools\MSVC\14.30.30705\include\format(2795,17): note: or       'auto std::make_wformat_args<std::wstring_view>(const std::wstring_view &)' [found using argument-dependent lookup]
1>_NODISCARD auto make_wformat_args(const _Args&... _Vals) {
1>                ^
1>C:\dev\...\include\fmt\xchar.h(219,1): note: while trying to match the argument list '(std::wstring_view)'
1>void print(std::FILE* f, wformat_string<T...> fmt, T&&... args) {

Looks like the same problem as in #2295, just for wchar_t.

[vitaut]

A PR to add namespace qualification would be welcome.