Allow InputStyleCloneElement to be constructed directly

[iansan5653]

Allows constructing InputStyleCloneElement directly with new InputStyleCloneElement() (no constructor parameters). This functionality is expected by DOM APIs like cloneNode.

Attempting to then insert the constructed element will result in it removing itself from the DOM tree since an InputStyleCloneElement cannot function without a target input element to clone. Instead, the clone must be bound with connect(target). Or, preferably, the clone can still be reused from the registry with InputStyleCloneElement.for(target).

• Fixes InputStyleCloneElement throws a TypeError when cloned #5