mol-plugin: unwind assembly animation

src/mol-math/geometry/symmetry-operator.ts

src/mol-math/linear-algebra/3d/mat4.ts

src/mol-plugin/behavior/dynamic/representation.ts

src/mol-plugin/index.ts

src/mol-plugin/state/animation/built-in.ts

src/mol-plugin/state/objects.ts

src/mol-plugin/state/transforms/representation.ts