This change helps to ensure that unsupported formats, such as `Table` representations are correctly rejected. ([#126996](https://github.com/kubernetes/kubernetes/pull/126996), [@p0lyn0mial](https://github.com/p0lyn0mial)) [SIG API Machinery and Testing]

navId = `tab-${uniqueName}`\n\n    if (this._config.allowDuplicates) {\n      tabId += `-${Math.floor(Math.random() * 1000)}`\n      navId += `-${Math.floor(Math.random() * 1000)}`\n    }\n\n    const newNavItem = `<li class=\"nav-item\" role=\"presentation\"><a href=\"#\" class=\"btn-iframe-close\" data-widget=\"iframe-close\" data-type=\"only-this\"><i class=\"fas fa-times\"></i></a><a class=\"nav-link\" data-toggle=\"row\" id=\"${navId}\" href=\"#${tabId}\" role=\"tab\" aria-controls=\"${tabId}\"...

)\n    const isActive = this._elemIsActive(child)\n    const outerElem = this._getOuterElement(child)\n    child.setAttribute('aria-selected', isActive)\n\n    if (outerElem !== child) {\n      this._setAttributeIfNotExists(outerElem, 'role', 'presentation')\n    }\n\n    if (!isActive) {\n      child.setAttribute('tabindex', '-1')\n    }\n\n    this._setAttributeIfNotExists(child, 'role', 'tab')\n\n    // set attributes to the related panel too\n    this._setInitialAttributesOnTargetPanel(child)\n...