Rewrite RadioButton component as FC (#24897)

app/javascript/mastodon/components/radio_button.tsx

@@ -0,0 +1,30 @@
+import React from 'react';
+import classNames from 'classnames';
+
+type Props = {
+  value: string;
+  checked: boolean;
+  name: string;
+  onChange: (event: React.ChangeEvent<HTMLInputElement>) => void;
+  label: React.ReactNode;
+};
+
+export const RadioButton: React.FC<Props> = ({ name, value, checked, onChange, label }) => {
+  return (
+    <label className='radio-button'>
+      <input
+        name={name}
+        type='radio'
+        value={value}
+        checked={checked}
+        onChange={onChange}
+      />
+
+      <span className={classNames('radio-button__input', { checked })} />
+
+      <span>{label}</span>
+    </label>
+  );
+};
+
+export default RadioButton;