feat(Radio): remove support for sx (#6833)

Co-authored-by: Marie Lucca <40550942+francinelucca@users.noreply.github.com>

Author: joshblack

.changeset/fair-views-laugh.md

@@ -0,0 +1,5 @@
+---
+'@primer/react': major
+---
+
+Remove sx support from Radio

packages/react/src/Radio/Radio.dev.stories.tsx

@@ -59,16 +59,6 @@
     {
       "name": "ref",
       "type": "React.RefObject<HTMLInputElement>"
-    },
-    {
-      "name": "as",
-      "type": "React.ElementType",
-      "defaultValue": "\"input\""
-    },
-    {
-      "name": "sx",
-      "type": "SystemStyleObject",
-      "deprecated": true
     }
   ],
   "subcomponents": []

packages/react/src/Radio/Radio.docs.json

@@ -1,11 +1,9 @@
 import type {ChangeEventHandler, InputHTMLAttributes, ReactElement} from 'react'
 import React, {useContext} from 'react'
-import type {SxProp} from '../sx'
 import {RadioGroupContext} from '../RadioGroup/RadioGroup'
 import {clsx} from 'clsx'
 import sharedClasses from '../Checkbox/shared.module.css'
 import classes from './Radio.module.css'
-import {BoxWithFallback} from '../internal/components/BoxWithFallback'
 
 export type RadioProps = {
   /**
@@ -33,8 +31,7 @@ export type RadioProps = {
    * Indicates whether the radio button must be checked before the form can be submitted
    */
   required?: boolean
-} & InputHTMLAttributes<HTMLInputElement> &
-  SxProp
+} & InputHTMLAttributes<HTMLInputElement>
 
 /**
  * An accessible, native radio component for selecting one option from a list.
@@ -69,8 +66,7 @@ const Radio = React.forwardRef<HTMLInputElement, RadioProps>(
     }
 
     return (
-      <BoxWithFallback
-        as="input"
+      <input
         type="radio"
         value={value}
         name={name}