[C++] [fun to know] const removal for declared function signature

Reference:
https://en.cppreference.com/w/cpp/language/function

Top-level cv-qualifiers are dropped from the parameter type (This adjustment only affects the function type, but doesn't modify the property of the parameter:
int f(const int p, decltype(p)*); and int f(int, const int*); declare the same function)

This also make function template deduction remove C.V from copy by value.

e.g

template<typename T >
void Run(T t);
const int i{42};
Run(i); // T is type of int