Fix the develop CI failures hidden behind cancelled jobs

- ci_test_noexceptions: the JSON Patch section of unit-throw_messages
  and the strict dumps in unit-serialization catch exceptions, which
  JSON_NOEXCEPTION turns into std::abort(); skip them there.
- ci_cppcheck: insert() and iter_impl::key() ended with a call to a
  noreturn throw helper, which Cppcheck reports as missingReturn; check
  the error case first and end with the return, like the other functions.
- ci_single_binaries: ordered_map.hpp uses the Hedley macros since #5838,
  so include hedley.hpp (IWYU).
- MSVC: also wrap the second vector<json> comparison in unit-constructor2
  in parentheses.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

include/nlohmann/ordered_map.hpp

@@ -23,6 +23,7 @@
 #include <nlohmann/detail/abi_macros.hpp>
 #include <nlohmann/detail/macro_scope.hpp>
 #include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/thirdparty/hedley/hedley.hpp>
 
 NLOHMANN_JSON_NAMESPACE_BEGIN