Assigns a visual indicator for required form fields.

function wp_required_field_indicator() {
	/* translators: Character to identify required form fields. */
	$glyph     = __( '*' );
	$indicator = '' . esc_html( $glyph ) . '';

	/**
	 * Filters the markup for a visual indicator of required form fields.
	 *
	 * @since 6.1.0
	 *
	 * @param string $indicator Markup for the indicator element.
	 */
	return apply_filters( 'wp_required_field_indicator', $indicator );
}