1.1.2. Set the ID attribute value

set-id-attribute.js

registerBlockType( 'rave/initiative-tracker', {
    // Code from 1.1.1. and other block properties here...
    edit: ( props ) => {
        const {
            attributes: {
                id,
            },
            clientId,
            setAttributes,
        } = props;

        useEffect( () => {

            // If id is not set (initial block creation), set id to clientId value.
            if ( 0 === id.length ) {
                setAttributes( {
                    id: clientId,
                } );
            }
        }, [] );
    },
} );