fix: Adapt status-code API changes

`system_error2::erased` has been made an implementation detail and been
replaced in the API by additional type aliases.

src/dplx/cncr/data_defined_status_domain.hpp

@@ -130,8 +130,6 @@ class data_defined_status_domain_type : public system_error::status_code_domain
 {
     template <class DomainType>
     friend class system_error::status_code;
-    template <class StatusCode>
-    friend class system_error::detail::indirecting_domain;
 
 public:
     using value_type = Enum;

src/dplx/cncr/data_defined_status_domain.test.cpp

@@ -9,7 +9,9 @@
 
 #include <catch2/catch_test_macros.hpp>
 #include <catch2/generators/catch_generators.hpp>
+#include <status-code/nested_status_code.hpp>
 #include <status-code/quick_status_code_from_enum.hpp>
+#include <status-code/system_code.hpp>
 
 #include "test_utils.hpp"
 
@@ -113,4 +115,12 @@ TEST_CASE("data defined domain returns the correct description")
     CHECK(std::string_view(test_code(code).message().data()) == description);
 }
 
+TEST_CASE("data defined domain can be put on the heap")
+{
+    cncr::system_error::system_code const subject
+            = cncr::system_error::make_nested_status_code(
+                    test_code{test_errc::perm});
+    CHECK(subject == test_errc::perm);
+}
+
 } // namespace cncr_tests

src/dplx/cncr/disappointment.hpp

@@ -28,17 +28,17 @@ template <typename T>
 struct status_code_throw_policy
     : outcome::experimental::policy::status_code_throw<
               T,
-              system_error::errored_status_code<system_error::erased<
-                      typename system_error::system_code::value_type>>,
+              system_error::erased_errored_status_code<
+                      typename system_error::system_code::value_type>,
               void>
 {
 };
 
 template <typename R>
 using result = outcome::experimental::status_result<
         R,
-        system_error::errored_status_code<system_error::erased<
-                typename system_error::system_code::value_type>>,
+        system_error::erased_errored_status_code<
+                typename system_error::system_code::value_type>,
         status_code_throw_policy<R>>;
 
 } // namespace dplx