Expected Behavior

When a List component is provided both an onOrder function and an array of disabled itemKey's the disabled items should not be re-orderable.

Actual Behavior

The disabled items are still able to be re-ordered through both Drag 'n Drop as well as clicking the up/down arrow to re-order the item.

URL, screen shot, or Codepen exhibiting the issue

Codepen example: https://codesandbox.io/s/grommet-v2-template-forked-82ogqc

Steps to Reproduce

1. Create a list component with an onOrder function
2. Create an array of itemKeys to disable
3. The list will appear and be re-orderable with some items disabled
4. Click the up/down arrow on any disabled item or Drag 'n Drop a disabled item and the list will be re-ordered.

Your Environment

• React version: 17.0.2
• Grommet version: 2.25.0
• Browser Name and version: Microsoft Edge 103.0.1264.51
• Operating System and version (desktop or mobile): macOS 12.4 (Desktop)