handleCustomTriggerClassUpdate() {
        const popupOpenClass = 'gh-portal-open';
        const popupCloseClass = 'gh-portal-close';
        this.customTriggerButtons?.forEach((customButton) => {
            const elAddClass = this.state.showPopup ? popupOpenClass : popupCloseClass;
            const elRemoveClass = this.state.showPopup ? popupCloseClass : popupOpenClass;
            customButton.classList.add(elAddClass);
            customButton.classList.remove(elRemoveClass);
        });
    }
Handle portal class set on custom trigger buttons