Exclude recursive ranges from the formatter specialization for ranges (#2974)

* 2954: Add test case

* Eliminate extra-test and merge it into existing std-test instead. Add conditionals for filesystem::path testing that does not run into the ambiguity problem.

* #2968: Introduce additional compile-time predicate to detect recursive ranges and reject them in formatter specialization for ranges. In addition, introduce additional wrapper traits for the individual logical operands of the complete range constraints

* #2968: Eliminate preprocessor condition that enables the formatter specialization for std::filesystem::path

* #2968: Eliminate preprocessor condition that enables the test for the formatter specialization for std::filesystem::path

* Use own bool_constant, which is available for all C++ versions

* Reintroduce previous workaround but restrict to VS 2015 for now

* Comma fix

* - Rename is_not_recursive_range to is_nonrecursive_range and add comment that explains it being depending on is_range being true
- Merge has_fallback_formatter_delayed into is_formattable_delayed and add comment that explains it being depending on is_not_recursive_range being true
- Replace disjunction in formatter specialization by has_fallback_formatter_delayed
- Get rid of unneeded detail:: prefixes within namespace detail

include/fmt/std.h

@@ -57,10 +57,6 @@ inline void write_escaped_path<std::filesystem::path::value_type>(
 
 }  // namespace detail
 
-#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1920
-// For MSVC 2017 and earlier using the partial specialization
-// would cause an ambiguity error, therefore we provide it only
-// conditionally.
 template <typename Char>
 struct formatter<std::filesystem::path, Char>
     : formatter<basic_string_view<Char>> {
@@ -73,7 +69,6 @@ struct formatter<std::filesystem::path, Char>
         basic_string_view<Char>(quoted.data(), quoted.size()), ctx);
   }
 };
-#endif
 FMT_END_NAMESPACE
 #endif