https://github.com/flutter/flutter/pull/122446 was a breaking change in Flutter 3.10 that made the `ClipboardData` constructor's `text` argument a required non-nullable argument. This leverages `dart fix`'s new automatic migration to, well, automatically migrate affected users.

Manual migration docs: https://docs.flutter.dev/release/breaking-changes/clipboard-data-required

Follow-up to https://github.com/flutter/flutter/pull/122446
Part of https://github.com/flutter/flutter/issues/121976