Summary: We have to do a couple of odd things to get the context menu items to behave. The code was duplicated between tree and visualizer. This custom component removes duplication and makes the approach a bit clearer (via js doc)
Reviewed By: antonk52
Differential Revision: D41495718
fbshipit-source-id: ec98d5101e636a2c9034c656d29991d4fe348762
