Disable "Password Changed" Email on WPGraphQL User Registration

PasswordChangeEmailHandler.php

<?php

class PasswordChangeEmailHandler {
    /**
     * User ID of the registered user.
     *
     * @var int
     */
    private $registered_user_id = 0;

    public function register_hooks() {
        add_action( 'register_new_user',          [ $this, 'set_registered_user_id'] );
        add_filter( 'send_password_change_email', [ $this, 'maybe_prevent_password_change_email'], 10, 3 );
    }

    /**
     * Capture the user ID of the newly registered user and use it to set
     * the $registered_user_id property for use in the methods below.
     *
     * @param int $user_id ID of the registered user.
     */
    public function set_registered_user_id( int $user_id ) {
        $this->registered_user_id = $user_id;
    }

    /**
     * @param bool  $send     Whether to send the email.
     * @param array $user     The original user array.
     * @param array $userdata The updated user array.
     *
     * @return bool Whether to send the email.
     */
    public function maybe_prevent_password_change_email( bool $send, array $user, array $userdata ) {
        if ( ! $this->should_send_password_change_email( $userdata ) ) {
            return false;
        }

        return $send;
    }

    /**
     * If the user was registered during this same request, do not send
     * the password change email.
     *
     * @param array $user The updated user array.
     *
     * @return bool Whether the password change email should be sent.
     */
    private function should_send_password_change_email( array $userdata ) {
        return $this->registered_user_id !== $userdata['ID'];
    }
}