Fix transient error with filtered search lazy author/assignee tokens

What does this MR do?

Are there points in the code the reviewer needs to double check?

These changes were used in ce-to-ee-9-3-rc2,


I think this happens because of the author and assignee tokens where we swap out the username for an avatar and name

Failing screenshot Passing screenshot (locally)

When the test fails, it tries to click on the input, .filtered-search, but the avatars load in and it accidentally clicks a token instead. I marked the spot, the test tried to click 1155.5, 421 which missed

Why was this MR needed?

Transient test failures

As seen in,

Does this MR meet the acceptance criteria?

What are the relevant issue numbers?

Edited by username-removed-892863