
Notifies the engine when `PointerSignalEvents` have been ignored by the framework, through the `ui.PointerData.respond` method. This allows the web to "preventDefault" (or not) on `wheel` events. ## Issues * Fixes (partially): https://github.com/flutter/flutter/issues/139263 ## Tests * Added tests to ensure `respond` is called at the right time, with the right value. ## Demo * https://dit-multiview-scroll.web.app <details> <summary> ## Previous versions </summary> 1. Modified `PointerScrollEvent`, not shippable. 2. Modified when events were handled, instead of the opposite. </details>