refactor: fix merge errors for use w/ expected

include/jvalidate/format.h

@@ -695,10 +695,7 @@ template <typename CharT> inline bool email(std::basic_string_view<CharT> em) {
 }
 
 template <typename T> inline bool ctor_as_valid(std::string_view str) {
-  try {
-    [[maybe_unused]] auto _ = T(str);
-    return true;
-  } catch (std::exception const &) { return false; }
+  return T::parse(str).has_value();
 }
 
 #if JVALIDATE_HAS_IDNA