Fix logic error in `markNeedsPaint` (#112735)

* Update object.dart

* Update object.dart

* Update object.dart

* Update object.dart

* Update object.dart

packages/flutter/lib/src/rendering/object.dart

@@ -2627,10 +2627,13 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
         }
         return true;
       }());
-      // If we're the root of the render tree (probably a RenderView),
-      // then we have to paint ourselves, since nobody else can paint
-      // us. We don't add ourselves to _nodesNeedingPaint in this
-      // case, because the root is always told to paint regardless.
+      // If we are the root of the render tree and not a repaint boundary
+      // then we have to paint ourselves, since nobody else can paint us.
+      // We don't add ourselves to _nodesNeedingPaint in this case,
+      // because the root is always told to paint regardless.
+      //
+      // Trees rooted at a RenderView do not go through this
+      // code path because RenderViews are repaint boundaries.
       if (owner != null) {
         owner!.requestVisualUpdate();
       }