Incorrect participants order displayed when opening a conversation on the top "Participants" section

[steffipravasi]

Ticket similar to #1323
User: 182542 Singh,Amarjot [email protected]
Tried creating a new conversation by logging in as Amarjot and also by switching identity from sys admin to Amarjot's
Created a new conversation with supervisor Christopher Munro
When viewing the conversation in the list on Open conversations page, the participants order is displayed correctly which is Christopher Munro, Amarjot Singh (supervisor,employee)
But when opening the conversation, the order changes to employee,supervisor - Amarjot Singh, Christopher Munro
Expected result: The order always remains supervisor,employee