Revert "BS-1774 [6.0.4] Checkbox list widget default types suggested are String instead of List or map"

This reverts commit 2e7aa89ebc09138e8a23e5ce9ec8c77c78a7c170.
BS-1774
[6.0.4] Checkbox list widget default types suggested are String instead
of List or map
Merge branch 'master' of https://github.com/bonitasoft/bonita-studio.git