Fix -Wignored-qualifiers improved in clang20 in util

Fix errors from [here](https://nda.ya.ru/t/6hgrAk757JpcZP
commit_hash:46e426f3170c5b9881f552314f602e57662334a6

Author: 4JustMe4

util/generic/typetraits.h

@@ -133,7 +133,7 @@ class TTypeTraits<void>: public TTypeTraitsBase<void> {};
         struct TBase {                                                                    \
             void method();                                                                \
         };                                                                                \
-        class THelper: public T, public TBase {                                           \
+        class THelper: public std::remove_const_t<T>, public TBase {                      \
         public:                                                                           \
             template <class T1>                                                           \
             inline THelper(const T1& = T1()) {                                            \