Prior to this change, when edit the chatroom and try to add user again. To fix this problem, modify the participant id to be compatible with the suggested user id. After this change, existing members shouldn't be suggested as members to be added on edit mode.
(cherry picked from commit 377fb6601930c557433f07e131cd26cf9e30141d)
Prior to this change, when edit the chatroom and try to add user again. To fix this problem, modify the participant id to be compatible with the suggested user id. After this change, existing members shouldn't be suggested as members to be added on edit mode.
(cherry picked from commit 377fb6601930c557433f07e131cd26cf9e30141d)