Template/Description field does not appear to work

A requested feature was added awhile back (see attached issues) that has been marked as completed but seems to not actually work yet. A template was provided and, while it includes a description field, the module doesn't appear to use the template... nor is there a description field available in the LBB edit form.

It looks like it might be related to this canceled merge awhile back: https://git.drupalcode.org/project/layout_builder_browser/-/merge_reques...