NbToastrModule breaks iOS/Safari

### Issue type

* [x ] bug report
* [ ] feature request

### Issue description

**Current behavior:**

Whenever i use a link to get to a site which has an component which uses the NbToastrModule the entire application just throws errors and breaks.

**Expected behavior:**
Not throw errors and work as intended.

**Steps to reproduce:**

Just include the NbToastrService in a component and try it out.

**Related code:**

### Other information:

Angular 13 & Nebular 9.0.0