fix repr update for Structure.asParent objects

src/mol-model/structure/structure/structure.ts

src/mol-repr/structure/complex-visual.ts

src/mol-repr/structure/units-representation.ts

src/mol-repr/structure/units-visual.ts

src/mol-repr/structure/visual/bond-inter-unit-cylinder.ts

src/mol-repr/structure/visual/bond-inter-unit-line.ts

src/mol-repr/structure/visual/bond-intra-unit-cylinder.ts

src/mol-repr/structure/visual/bond-intra-unit-line.ts