Resolve #3584113 "Add formatted date"
The existing TimestampCeFieldFormatter supports timestamp, created, and changed fields which store Unix timestamps. However, datetime and daterange fields store ISO date strings (e.g., 2025-04-10T09:00:00) and are not supported. There is no built-in custom elements formatter for datetime and daterange field types. Users needing formatted date output with timezone and date format support for these field types must write a custom formatter.