[Fixes #113031089] When the graph model is undergoing a configuration change (e.g. when an attribute is being deleted from the data context), don't attempt to draw.
[Fixes #113031089] When the graph model is undergoing a configuration change (e.g. when an attribute is being deleted from the data context), don't attempt to draw.

concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap