iModel: Include level display description in iModel tree view for Models

The tree view of the files in an iModel are the main orientation for users. They want it to look the same as the level display the see in Bentley View (see screennshot 1)

Unfortunately, the level description is not displayed in the tree view for models (see screenshot 2). The information is there but just not displayed (if the tree view is switched to categories the discription is displayed, see screenshot 3).

Please add the description to the tree view, not only for categories but also for models.