added text truncate in import channel dropdown#4186

LianaHarris360 merged 2 commits intolearningequality:unstablelearningequality/studio:unstablefrom

Jaspreet-singh-1032:fixes-4166-overlapping-text-on-dropdownJaspreet-singh-1032/studio:fixes-4166-overlapping-text-on-dropdownCopy head branch name to clipboard