Block Editor

import { useState } from 'react';
import { ToggleControl } from '@wordpress/components';

const [isHeroImageRight, setHeroImageRight] = useState(false);

<InspectorControls>
    <PanelBody>
        <ToggleControl
            label="Image Position"
            help={isHeroImageRight ? "Image Right." : "Image Left."}
            checked={isHeroImageRight}
            onChange={(newValue) => {
                setHeroImageRight(newValue);
                if (newValue) {
                    console.log("ImageRight");
                } else {
                    console.log("ImageLeft");
                }
            }}
        />
    </PanelBody>
</InspectorControls>

<div className={isHeroImageRight ? "hero-img-right" : "hero-img-left"}>