Fix GestureManager, CollectionViewHandler from decompiled production

GestureManager.cs:
- Added third fallback for TappedEvent fields (_TappedHandler, <Tapped>k__BackingField)
- Added type info dump when event cannot be fired (debugging aid)
- Fixed swipe Right handling with proper direction check
- Added SendSwiped success log
- Changed Has* methods to use foreach instead of LINQ

CollectionViewHandler.cs:
- Added full OnItemTapped implementation with gesture handling
- Added MauiView assignment in MapItemTemplate for gesture processing

SkiaItemsView.cs:
- Added GetItemView() method for CollectionViewHandler

Verified handlers match decompiled:
- GraphicsViewHandler
- ItemsViewHandler
- WindowHandler

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Views/SkiaItemsView.cs

@@ -722,6 +722,18 @@ public class SkiaItemsView : SkiaView
         }
         base.Dispose(disposing);
     }
+
+    /// <summary>
+    /// Gets the SkiaView for a given item index from the cache.
+    /// </summary>
+    public SkiaView? GetItemView(int index)
+    {
+        if (!_itemViewCache.TryGetValue(index, out var view))
+        {
+            return null;
+        }
+        return view;
+    }
 }
 
 /// <summary>