component.Base: getDomRect() => regression bug for arrays

inside the old version, we were able to pass either an id, or an array of ids => getting an array of rects back.

    /**
     * Convenience shortcut
     * @param {String[]|String} id=this.id
     * @param {String} appName=this.appName
     * @returns {Promise<*>}
     */
    getDomRect(id=this.id, appName=this.appName) {
        return Neo.main.DomAccess.getBoundingClientRect({appName, id})
    }

the new version assumes that there will be just one rect, transforming it to a DOMRect => this breaks a lot of use cases. E.g.: horizontal scrolling inside component.DateSelector: https://github.com/neomjs/neo/blob/dev/src/component/DateSelector.mjs#L428