feat(canvas): implement local node size pinning and reconciliation logic

- Added functions to handle local node size pins, ensuring that node sizes are preserved during reconciliation.
- Updated `reconcileCanvasFlowNodes` to incorporate size pinning logic.
- Enhanced tests to verify the correct behavior of size pinning in various scenarios.
- Updated related components to support new size pinning functionality.

components/canvas/canvas.tsx

@@ -119,6 +119,7 @@ function CanvasInner({ canvasId }: CanvasInnerProps) {
       pendingConnectionCreatesRef,
       pendingLocalPositionUntilConvexMatchesRef,
       pendingLocalNodeDataUntilConvexMatchesRef,
+      pendingLocalNodeSizeUntilConvexMatchesRef,
       preferLocalPositionNodeIdsRef,
     },
     actions: {
@@ -454,6 +455,7 @@ function CanvasInner({ canvasId }: CanvasInnerProps) {
       pendingConnectionCreatesRef,
       pendingLocalPositionUntilConvexMatchesRef,
       pendingLocalNodeDataUntilConvexMatchesRef,
+      pendingLocalNodeSizeUntilConvexMatchesRef,
       preferLocalPositionNodeIdsRef,
       isDragging,
       isResizing,