Currently when using `ivy-ngcc` it will print out a warning
```
Failed to read entry point info from //node_modules/@schematics/angular/workspace/files/package.json with error SyntaxError: Unexpected token < in JSON at position 1121.
```
Fixes#13378
Now that the service schematic uses `providedIn` by default,
we can simplify the test to use `TestBed.configureTestingModule({})`.
Also use `TestBed.get()` instead of the `inject` wrapper.