nb-icon not visible if used as shared component with Angular 10

### Issue type
* [x ] bug report

### Issue description

**Current behavior:**

If we use nb-icon in/as shared module then its not visible in parent or used component.
**Expected behavior:**

It should visible and work as it works
**Steps to reproduce:**

**Related code:**

```

{{text}}

Please Select file

@NgModule({
declarations: [CloudUploadComponent],
exports: [
CloudUploadComponent
],
imports: [
CommonModule
]
})
export class SharedModule { }
`**Inclucded in parent module**`

```
@NgModule({
declarations: [AddModifyComponent, ListingComponent, DetailComponent],
imports: [
SharedModule,
CommonModule
]
})
export class PropertyModule { }

**In component**
```

```
```

### Other information:

**npm, node, OS, Browser**
```

```

**Angular, Nebular**
```

```