Remove useless defaults in link_to_member_avatar.
Removes useless defaults in the LinkToMemberAvatar component, one of which was causing 404s on MRs with approvals enabled.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Removes useless defaults in the LinkToMemberAvatar component, one of which was causing 404s on MRs with approvals enabled.