This PR adds boundary feature to the drag gestures, including MultiDragGestureRecognizer and DragGestureRecognizer. The GestureDetector widget will also benefit from this.
Fixes: #146749
Pre-launch Checklist
[x] I read the Contributor Guide and followed the process outlined there for submitting PRs.
[x] I read the Tree Hygiene wiki page, which explains my responsibilities.
Inspired by the review on #146182.
This PR adds boundary feature to the drag gestures, including
MultiDragGestureRecognizer
andDragGestureRecognizer
. TheGestureDetector
widget will also benefit from this.Fixes: #146749
Pre-launch Checklist
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