… conditionals for filesystem::path testing that does not run into the ambiguity problem.

…cursive 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

…ter specialization for std::filesystem::path

…or the formatter specialization for std::filesystem::path

…ent 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