make all shape keys available as named attributes instead of just the rest position

I'd like to use the vertex positions of my shape keys in geometry nodes, but it's only possible to create and access the rest position attribute.

I propose scrapping the 'add rest pose' option in favour of all shape keys showing up as attributes by default. For example:

• Basis (this is the same as the rest pose)
• Key 1
• Key 2
• etc

then they can be accessed with a named attribute node