RadioButton: Unexpected left spacing

[janhassel]

What package(s) are you using?

• carbon-components
• carbon-components-react

Detailed description

Describe in detail the issue you're having.

The radio button component has a left margin of 8px which causes misalignment.

Is this issue related to a specific component?

Yes, RadioButton

What did you expect to happen? What happened instead? What would you like to
see changed?

The left side of the radio button should be aligned with the left side of the container.

What browser are you working in?

Chrome 88

What version of the Carbon Design System are you using?

[email protected]

Steps to reproduce the issue

1. Open RadioButtonGroup story

Additional information

The issue is quite visible especially when paired with other related elements close to it (like a checkbox group).

https://codesandbox.io/s/cool-cdn-mle09

The extra spacing seems to have been introduced in #7133