When copy pasting nodes and blocks at the same time, blocks are not pasted, only nodes are kept. 23.1.0a20

Repro: 
# Create a VFX Graph and add a second system
# In the first system, link nodes to a block 
# select the nodes and the block linked and copy it
# select a block of the second system in the same context as the one copied in previous system
# paste 

Happens: 
* Only nodes are pasted, new block is discarded

Expected:
* Block is pasted at the same spot a non linked block would, with the link to pasted nodes kept

if no context is selected, then only nodes are pasted?

(!) Not tested on other versions!