Update relatedUserSelectorViewTests.es6.js to use the new avatar rendering mechanism.

Review Request #10703 — Created Sept. 7, 2019 and submitted — Latest diff uploaded

Information

Review Board
release-4.0.x
116fc8e...

Reviewers

This test was not updated to use the new avatar rendering support recently
added to Djblets, which was causing this test to fail. This patch updates
the test.

This test was run locally, and now passes.