Animation option for row reloading is not a valid option in AppKitExtension

[martindufort]

Checklist

• [x] This is not a Apple's bug.
• [x] Reviewed the README and documents.
• [x] Searched existing issues for ensure not duplicated.

Current Behavior

When performing a NSTableView.reload a reloadRowsAnimation can be specified but this is not a valid option for a reloadData operation

Expected Behavior

That parameter should be removed.