Fix broken InfoBar rename capability.
Fix broken InfoBar rename capability.

The rename function was skipping rename if DocumentController.externalId was absent. Was always absent.
I suspect the property was renamed and this was an orphan reference to the old name.

[#101726180]

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