* In `infography_content.dart`, the `marked` property of `Content` is changed from `final` to a mutable `bool`.
* In `infography_screen.dart`, the `onMarkChanged` callback in `InfographyItem` is updated to accept an additional `bool shouldUpdate` parameter, and the callback is called with the new signature in `InfographyScreenState`.
* In `infography_item.dart`, the `onMarkChanged` callback in `InfographyTag` is updated to accept an additional `bool shouldUpdate` parameter.
* In `infography_tag.dart`, the `onPressed` callback in `InfographyTag` is updated to pass the `onMarkChanged` callback with the new signature to the `HashtagScreen`.
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