Remove sender.name and color from message payload

...i/group-chat-msg/server/modifiers/addBulkGroupChatMsgs.js

...ts/api/group-chat-msg/server/modifiers/addGroupChatMsg.js

...pi/group-chat-msg/server/modifiers/syncMeetingChatMsgs.js

...chat/time-window-list/time-window-chat-item/container.jsx

...ts/ui/components/components-data/chat-context/context.jsx