Object.fromEntries: add basic tests

features.txt

test/built-ins/Object/fromEntries/evaluation-order.js

...s/Object/fromEntries/iterator-closed-for-null-entry.js.js

...Object/fromEntries/iterator-closed-for-string-entry.js.js

...romEntries/iterator-closed-for-throwing-entry-accessor.js

...ntries/iterator-closed-for-throwing-entry-key-tostring.js

...ries/iterator-not-closed-for-next-returning-non-object.js

...Entries/iterator-not-closed-for-throwing-done-accessor.js

...ject/fromEntries/iterator-not-closed-for-throwing-next.js

...ct/fromEntries/iterator-not-closed-for-uncallable-next.js

test/built-ins/Object/fromEntries/key-order.js

test/built-ins/Object/fromEntries/length.js

test/built-ins/Object/fromEntries/name.js

test/built-ins/Object/fromEntries/requires-argument.js

test/built-ins/Object/fromEntries/simple-properties.js

...lt-ins/Object/fromEntries/string-entry-object-succeeds.js

...t-ins/Object/fromEntries/string-entry-primitive-throws.js

test/built-ins/Object/fromEntries/supports-symbols.js

test/built-ins/Object/fromEntries/to-property-key.js

test/built-ins/Object/fromEntries/uses-define-semantics.js