List: when provided only with primaryKey results in non-unique key error

[prabodhmeshram]

Expected Behavior

When using a List component with only primaryKey attribute with render function, the list should be rendered without any console errors.

Actual Behavior

When using a List component with only primaryKey attribute with render function, the list is rendered but there is console error thrown that the key attribute provided to the List Item is non-unique.

URL, screen shot, or Codepen exhibiting the issue

CodeSandbox url to reproduce the issue

Error Screenshot

Your Environment

• Grommet version: 2.34.2
• Browser Name and version: Chrome, Firefox, Edge
• Operating System and version (desktop or mobile): Windows, MacOS