[MM-53192] Patch Show Full Name issue in Insights team_members API (#24027)

* [MM-53192] Patch full name leak in Insights team_members API

* Update server/channels/app/team.go

Co-authored-by: Ibrahim Serdar Acikgoz <serdaracikgoz86@gmail.com>

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Co-authored-by: Ibrahim Serdar Acikgoz <serdaracikgoz86@gmail.com>

server/channels/store/store.go

@@ -171,7 +171,7 @@ type TeamStore interface {
 	// users belong.
 	GetCommonTeamIDsForTwoUsers(userID, otherUserID string) ([]string, error)
 
-	GetNewTeamMembersSince(teamID string, since int64, offset int, limit int) (*model.NewTeamMembersList, int64, error)
+	GetNewTeamMembersSince(teamID string, since int64, offset int, limit int, showFullName bool) (*model.NewTeamMembersList, int64, error)
 }
 
 type ChannelStore interface {