Add Surface Snap Move feature and update related components

src/assets/model-instance-rendering.ts

@@ -195,6 +195,7 @@ export function createModelInstanceRenderGroup(
     const previewShell = createWireframeBox(bounds.size, previewShellColor, MODEL_PREVIEW_SHELL_OPACITY);
     previewShell.position.set(bounds.center.x, bounds.center.y, bounds.center.z);
     previewShell.userData.shadowIgnored = true;
+    previewShell.userData.nonPickable = true;
     group.add(previewShell);
   }
 
@@ -202,6 +203,7 @@ export function createModelInstanceRenderGroup(
     const selectionShell = createWireframeBox(bounds.size, MODEL_SELECTION_COLOR, 0.8);
     selectionShell.position.set(bounds.center.x, bounds.center.y, bounds.center.z);
     selectionShell.userData.shadowIgnored = true;
+    selectionShell.userData.nonPickable = true;
     group.add(selectionShell);
   }