message: fixed ExplodeStructureRepresentation3D
diff: @@ -300,9 +300,9 @@ const ExplodeStructureRepresentation3D = PluginStateTransform.BuiltIn({
  canAutoUpdate() {
  return true;
  },
  - apply({ a, params, spine }) {
  - const rootStructure = spine.getRootOfType(SO.Molecule.Structure)!.data;
  + apply({ a, params }) {
  const structure = a.data.source.data;
  + const rootStructure = structure.parent || structure;
  const unitTransforms = new StructureUnitTransforms(rootStructure);
  explodeStructure(structure, unitTransforms, params.t);
  return new SO.Molecule.Structure.Representation3DState({
  @@ -312,8 +312,9 @@ const ExplodeStructureRepresentation3D = PluginStateTransform.BuiltIn({
  source: a
  }, { label: `Explode T = ${params.t.toFixed(2)}` });
  },
  - update({ a, b, newParams, oldParams, spine }) {
  - const rootStructure = spine.getRootOfType(SO.Molecule.Structure)!.data;
  + update({ a, b, newParams, oldParams }) {
  + const structure = a.data.source.data;
  + const rootStructure = structure.parent || structure;
  if (b.data.info !== rootStructure) return StateTransformer.UpdateResult.Recreate;
  if (oldParams.t === newParams.t) return StateTransformer.UpdateResult.Unchanged;
  const unitTransforms = b.data.state.unitTransforms!;
  