overlay issue on online demo app null (reading 'setAttribute') at On updateElementDirection

### Issue type
* [x] bug report

### Issue description
the issue in the online Ngx admin demo app u can check
these are the steps
1- open modal-overlays/window and strat opening any of them
2- change the direction pf the page using the icon
3- bug show up in the console

**Related code:**

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**Angular, Nebular**
angular 16
nb latest
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