Disable prosemirror default behavior for backspace and enter (LIT-416353)
This is to fix the issue of the inline node gets deleted on backspace.
and another case will create another node on the enter keypress. https://www.loom.com/share/17c8569e35254d1bb38fd982b3f7398e
also will remove the node when it's empty for the delete keypress. https://www.loom.com/share/ca3ddf8961ce4717b4d281bcb6f7cc7a