Revert "[NEW][ENTERPRISE] Hide message history for new channel members (#20253)" (#20461)

app/api/server/lib/messages.js

app/api/server/v1/channels.js

app/api/server/v1/chat.js

app/api/server/v1/groups.js

app/api/server/v1/im.js

app/channel-settings/server/methods/saveRoomSettings.js

...cussion/client/views/creationDialog/CreateDiscussion.html

...iscussion/client/views/creationDialog/CreateDiscussion.js

app/discussion/server/methods/createDiscussion.js

app/lib/lib/roomTypes/direct.js

app/lib/lib/roomTypes/private.js

app/lib/lib/roomTypes/public.js

app/lib/server/functions/cleanRoomHistory.js

app/lib/server/functions/createDirectRoom.js

app/lib/server/functions/createRoom.js

app/lib/server/functions/loadMessageHistory.js

app/lib/server/methods/getChannelHistory.js

app/livechat/lib/LivechatRoomType.js

app/livechat/server/hooks/sendToCRM.js

app/mentions/server/methods/getUserMentionsByChannel.js