Lambda python functions don't render nicely on the flowchart

[datajoely]

Description

As you can see, nodes which use a lambda (anonymous function) on do not render nicely on the flowchart:

However, it does look like they render correctly on the tree panel to the left 🤔

Steps to Reproduce

Make a node that looks like this:

node(
   func=lambda x : x,
   inputs='x',
   outputs='y'
)

Expected Result

It should look like <lambda> much the same as the tree panel