Fix dropdown filter tests
What does this MR do?
Fixes projects_dropdown_filter_spec
and groups_dropdown_filter_spec
test specs broken by a gitlab-ui upgrade.
Why were the tests broken by a gitlab-ui upgrade?
Because the components’ tests are referencing a class selector in the avatar component that does not exist anymore in gitlab-ui: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/15659/diffs#15ae8d101788428e2fc2d4ff8da48c0e0f2f1f64_144_143
What is the solution?
This MR updates the selectors in the tests.
Closes #13819 (closed)
Edited by Enrique Alcántara