refactor: Rooms Model 5/N (#28619)

...hannel-settings/server/functions/saveReactWhenReadOnly.ts

...annel-settings/server/functions/saveRoomSystemMessages.ts

...r/app/channel-settings/server/methods/saveRoomSettings.ts

apps/meteor/app/e2e/server/methods/setRoomKeyID.ts

...meteor/app/importer/server/classes/ImportDataConverter.ts

...r/app/irc/server/irc-bridge/localHandlers/onCreateUser.js

...meteor/app/irc/server/irc-bridge/localHandlers/onLogin.js

apps/meteor/app/lib/server/functions/archiveRoom.ts

apps/meteor/app/lib/server/functions/deleteUser.ts

...eteor/app/lib/server/functions/getUserSingleOwnedRooms.ts

apps/meteor/app/lib/server/functions/saveUserIdentity.ts

apps/meteor/app/lib/server/functions/setRoomAvatar.ts

apps/meteor/app/lib/server/functions/unarchiveRoom.ts

apps/meteor/app/lib/server/functions/updateGroupDMsName.ts

apps/meteor/app/lib/server/methods/getRoomJoinCode.ts

apps/meteor/app/livechat/server/lib/Contacts.ts

apps/meteor/app/livechat/server/lib/Livechat.js

apps/meteor/app/meteor-accounts-saml/server/lib/SAML.ts

apps/meteor/app/models/server/models/Rooms.js

apps/meteor/app/slackbridge/server/RocketAdapter.js