Drag and drop gesture recogniser gets platform args for drag and drop events

[davidbritch]

In .NET 8, the drag and drop gesture recogniser gets platform args for drag and drop events.

dotnet/maui#16962

.NET MAUI 8 has gained the ability to control on iOS/Mac Cat whether drag previews are kept full-sized when dragging begins:

dotnet/maui#17282

The above PR also shows how to change the drag caption and glyph on Windows.

---

Associated WorkItem - 164914