ng add fails on new Angular 14 project

### Issue type

**I'm submitting a ...** (check one with "x")

* [ x ] bug report
* [ ] feature request

### Issue description

**Current behavior:**

`ng add @nebular/theme` fails on a brand new Angular 14 project.

**Expected behavior:**

`ng add @nebular/theme` completes and sets up nebular correctly.

**Steps to reproduce:**

1 Update @angular/cli to latest version (currently 14.0.1) and create new project.
2 Run `ng add @nebular/theme`.

### Other information:

**Angular, Nebular**
- Angular - 14.0.1
- Nebular - 9.0.3