[core] Switch to ankerl::unordered_dense

Signed-off-by: x7z4w <x7z4w@noreply.codeberg.org>

generator/hierarchy.hpp

@@ -28,10 +28,11 @@
 #include <memory>
 #include <optional>
 #include <string>
-#include <unordered_map>
 #include <utility>
 #include <vector>
 
+#include "3party/ankerl/unordered_dense.h"
+
 namespace generator::hierarchy
 {
 using GetMainTypeFn = std::function<uint32_t(FeatureParams::Types const &)>;