refactor: Remove synced cron package and use agenda instead (#28868)

apps/meteor/.meteor/packages

apps/meteor/.meteor/versions

apps/meteor/app/cloud/server/index.ts

apps/meteor/app/crowd/server/crowd.ts

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

.../app/livechat/server/business-hour/BusinessHourManager.ts

apps/meteor/app/livechat/server/business-hour/index.ts

apps/meteor/app/livechat/server/startup.ts

...ivechat/server/statistics/LivechatAgentActivityMonitor.ts

apps/meteor/app/retention-policy/server/cronPruneMessages.ts

...teor/app/smarsh-connector/server/functions/generateEml.ts

...meteor/app/smarsh-connector/server/functions/sendEmail.ts

apps/meteor/app/smarsh-connector/server/lib/rocketchat.js

apps/meteor/app/smarsh-connector/server/startup.js

apps/meteor/app/smarsh-connector/server/startup.ts

apps/meteor/app/statistics/server/lib/SAUMonitor.ts

apps/meteor/app/statistics/server/startup/monitor.ts

apps/meteor/app/utils/server/lib/cron/Cronjobs.ts

apps/meteor/app/version-check/server/index.ts

...r/definition/externals/meteor/littledata-synced-cron.d.ts