Expected Behavior

"Clear All" button should appear instead of "Select All" in SelectMultiple component after "Select All" was applied with "reduce: true" option set for "valueKey"

Actual Behavior

Component was stuck in "Select All" mode even with all options already selected

URL, screen shot, or Codepen exhibiting the issue

https://codesandbox.io/s/grommet-v2-template-forked-l8b45k?file=/index.js

Steps to Reproduce

1. Set "reduce: true" for "valueKey" with object options in SelectMultiple component
2. Click "Select All" button - it works as expected
3. BUT button will not change to "Clear All" - bug

Your Environment

• Grommet version: 2.28.0
• Browser Name and version: Google Chrome 107.0.5304.110
• Operating System and version (desktop or mobile): Mac OS Ventura 13.0.1