Allow to use get with explicit constructor (#3079)

* ⏪ remove "fix" that caused #3077

include/nlohmann/json.hpp

@@ -3069,7 +3069,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
     ValueType get_impl(detail::priority_tag<0> /*unused*/) const noexcept(noexcept(
                 JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), std::declval<ValueType&>())))
     {
-        ValueType ret{};
+        auto ret = ValueType();
         JSONSerializer<ValueType>::from_json(*this, ret);
         return ret;
     }