Regression: Change preference to be default legacy messages (#25255)

apps/meteor/app/lib/server/startup/settings.ts

apps/meteor/app/ui-message/client/message.html

apps/meteor/app/ui-utils/client/lib/messageContext.js

apps/meteor/app/ui-utils/client/lib/popover.html

...meteor/app/ui/client/views/app/lib/getCommonRoomEvents.js

apps/meteor/app/ui/client/views/app/room.html

...ent/views/account/preferences/PreferencesGlobalSection.js

apps/meteor/packages/rocketchat-i18n/i18n/en.i18n.json

apps/meteor/server/startup/migrations/index.ts

apps/meteor/server/startup/migrations/v261.ts

apps/meteor/tests/cypress/integration/06-messaging.spec.js

apps/meteor/tests/cypress/pageobjects/main-content.page.js

apps/meteor/tests/end-to-end/api/00-miscellaneous.js