fix(checkbox): mirror inline-checkbox fix to styles package

[tay1orjones]

Closes #10484

Only 1 minor thing from the audit to ensure parity between carbon-components and @carbon/styles, ref #10537

Changelog

New

• inline-checkbox: position relative style fix port to @carbon/styles

Testing / Reviewing

• View the carbon-react-next storybook, the inline-checkbox should now have position: relative;

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