More coverage for namespace object

src/dynamic-import/ns-get-own-property-str-found-init.case

src/dynamic-import/ns-get-own-property-str-not-found.case

src/dynamic-import/ns-get-own-property-sym.case

src/dynamic-import/ns-get-str-found.case

src/dynamic-import/ns-get-str-not-found.case

src/dynamic-import/ns-get-sym-found.case

src/dynamic-import/ns-get-sym-not-found.case

src/dynamic-import/ns-has-property-str-found-init.case

src/dynamic-import/ns-has-property-str-not-found.case

src/dynamic-import/ns-has-property-sym-found.case

src/dynamic-import/ns-has-property-sym-not-found.case

src/dynamic-import/ns-own-property-keys-sort.case

src/dynamic-import/ns-prevent-extensions-object.case

src/dynamic-import/ns-prevent-extensions-reflect.case

src/dynamic-import/ns-prop-descs.case

src/dynamic-import/ns-prototype.case

src/dynamic-import/ns-set-no-strict.case

src/dynamic-import/ns-set-prototype-of-null.case

src/dynamic-import/ns-set-prototype-of.case

src/dynamic-import/ns-set-same-values-no-strict.case