Currently the data formatter is treating std::atomic variables as transparent wrappers
around their underlying value type. This causes that when printing std::atomic<A *>, the data
formatter will forward all requests for the children of the atomic variable to the A * pointer type
which will then return the respective members of A. If A in turn has a member that contains
the original atomic variable, this causes LLDB to infinitely recurse when printing an object with
such a std::atomic pointer member.
We could implement a workaround similar to whatever we do for pointer values but this patch
just implements the std::atomic formatter in the same way as we already implement other
formatters (e.g. smart pointers or std::optional) that just model the contents of the as a child
"Value". This way LLDB knows when it actually prints a pointer and can just use its normal
workaround if "Value" is a recursive pointer.