Personally I'm not sure this is necessary. The type isn't so important for this node, and is easily visible with the sockets itself.

I had the idea for this some time ago, after which I forgot about it. When I remembered node labels, I decided to do it first. But yes, now I see that this is not so important for types (or you need to make a type label for all nodes with different types)
But it seems, given that this node has more type support than the others, it makes more sense.
But yes, rather it is easy to add and here it is, the implementation. But there is almost no reason for this.