xubaolin d49dcaa697
Introduce multi-touch drag strategies for DragGestureRecognizer (#136708)
Fixes #11884

As #38926 pointed out, the current Flutter implementation of multi-finger drag behavior is different from iOS and Android.
This change introduces the `MultitouchDragStrategy` attribute, which implements the Android behavior and can be controlled through `ScrollBehavior`, while retaining the ability to extend iOS behavior in the future.
2023-11-30 09:22:19 +00:00
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