In MR view, multiple sidebar close buttons when User is signed out
Description
Noticed on .com
When the user is signed out and visiting a public MR, multiple sidebar close buttons appear, one in the "Assignees" section and one in the "Reviewers" section.
![Screen_Shot_2021-01-05_at_11.25.41_AM](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)