Duplicate user entries in search results

[Shruti-1910]

When performing a user search in the app, the same user appears twice in the search results—once for their username and once for their name. This should be fixed so that each user only appears once in the search results.

Expected Behavior
The user should appear only once in the search results, regardless of whether the search term matches their username, name, or both.

Actual Behavior
The user appears twice in the search results—once for the username match and once for the name match.