[BUG]: DialogFooter error popover doesn't have correct positioning

[Kelayn]

dependencies:
"@gravity-ui/components": "2.11.0",
"@gravity-ui/icons": "2.8.1",
"@gravity-ui/navigation": "0.23.3",
"@gravity-ui/page-constructor": "4.47.2",
"@gravity-ui/uikit": "5.29.0",
"react": "16.14.0",
"react-dom": "16.14.0"

When props 'errorText' and 'showError' are passed to DialogFooter - the error popover renders behind the Dialog.
Link to sandbox