more adjustments to handle coarse elements

src/apps/render-test/components/detail.tsx

src/mol-geo/primitive/icosahedron.ts

src/mol-geo/representation/structure/point.ts

src/mol-geo/representation/structure/spacefill.ts

src/mol-geo/representation/structure/utils.ts

src/mol-geo/theme/structure/size/element.ts

src/mol-geo/theme/structure/size/index.ts

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