badges' bahaviour differ from doc's description

**Describe the bug**
Badges cannot be removed once set.

**To Reproduce**

**Expected behavior**
- Could toggle visibility by setting `visible:true|false` as described in graphin documentation .
- Or could be removed by `updateItem` or setting statusStyle .

**Desktop (please complete the following information):**
- OS: Linux
- Browser: any
- Version: any

Start by comparing badge behavior with the Graphin documentation, especially the `visible` setting, `updateItem`, and `statusStyle` entry points. Reproduce the issue in a Linux browser and verify that badges can be toggled or removed as described; no source files or tests are identified in the issue.

Written by the indexing model from the issue text.