Add the `changed` badge for the config node

[GogoVega]

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)

Proposed changes

Add the changed badge for the config node.

I used the left style to place the changed and error badges but it's not the best way to do it. And there is also the changed circle looks slightly cropped.

Checklist

• [x] I have read the contribution guidelines
• [x] For non-bugfix PRs, I have discussed this change on the forum/slack team.
• [x] I have run npm run test to verify the unit tests pass
• [ ] I have added suitable unit tests to cover the new/changed functionality