vue dragula support fix

[lunochkin]

Fixes(if relevant):

Checks

• [x] Build Success(npm run build)
• [x] Lint Success(npm run lint to check, npm run fix to fix)
• [x] File Integrity(git add -A or add rules at .gitignore file)
• [ ] Add Test(if relevant, npm run test to check)
• [ ] Add Demo(if relevant)

[plantain-00]

Thanks, released in v6.0.1