[$50]Registrants list must not include member handles for other roles, other than submitter

[SathyaJayabal]

topcoder-platform/challenge-api#240
Due to this change resources api returns all roles when searching for your own member ID. Hence in challenges where the user has other roles, the user's handle is displayed multiple times(one for each role).

Expected: The user's handle must be displayed only once and only f they have registered to the challenge.

example:
https://beta-community-app.topcoder.com/challenges/ea3a9e1f-49df-4ac5-9803-00bd693b27ba?tab=registrants
https://www.topcoder.com/challenges/30133858

user:picachui

https://beta-community-app.topcoder.com/challenges/4108d970-e210-4940-88ff-f1d57ac7a715?tab=registrants
https://www.topcoder.com/challenges/30133520?tab=registrants
user:picachui

cc @sushilshinde @lakshmiathreya

[crazyk07]

Contest https://www.topcoder.com/challenges/30135622 has been created for this ticket.

This is an automated message for crazyk via Topcoder X

[crazyk07]

Contest https://www.topcoder.com/challenges/30135622 has been updated - it has been assigned to luizrrodrigues.

This is an automated message for crazyk via Topcoder X

[lakshmiathreya]

@SathyaJayabal good catch!

[SathyaJayabal]

@luizrrodrigues , same scenario, user is only an observer to the challenge and not registered, but can still see the Unregister button.