datamanager-AnnotationPreview not working

@makseq, @hlomzik,hello
**Describe the bug**
A clear and concise description of what the bug is.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to projects list page
2. Click on 'Grid' button in the project list page
3. See error: Spinner loaded only

**Expected behavior**
Display annotaions in grid view.

**Environment (please complete the following information):**
- OS: [win10]
- Label Studio Version [master]

**Additional context**
'https://github.com/HumanSignal/dm2/blob/master/src/components/Common/AnnotationPreview/AnnotationPreview.js'
generatePreview methed not exist