docs: more closely align the `getting-started-v0` and `getting-started` docs examples (#40197)

This commit aligns the code and style in the `getting-started-v0` docs
example with that of the `getting-started` example more closely (except
for the the parts that are intentionally different between the two).

PR Close #40197

aio/content/examples/getting-started-v0/src/app/app.component.css

@@ -1,3 +1 @@
-p {
-  font-family: Lato;
-}
+

aio/content/examples/getting-started-v0/src/app/app.component.ts

@@ -3,6 +3,7 @@ import { Component } from '@angular/core';
 @Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
-  styleUrls: [ './app.component.css' ]
+  styleUrls: ['./app.component.css']
 })
-export class AppComponent  {}
+export class AppComponent {
+}

aio/content/examples/getting-started-v0/src/app/app.module.ts

@@ -20,6 +20,8 @@ import { ProductListComponent } from './product-list/product-list.component';
     TopBarComponent,
     ProductListComponent
   ],
-  bootstrap: [ AppComponent ]
+  bootstrap: [
+    AppComponent
+  ]
 })
 export class AppModule { }

aio/content/examples/getting-started-v0/src/app/top-bar/top-bar.component.ts

@@ -1,15 +1,10 @@
-import { Component, OnInit } from '@angular/core';
+import { Component } from '@angular/core';
 
 @Component({
   selector: 'app-top-bar',
   templateUrl: './top-bar.component.html',
   styleUrls: ['./top-bar.component.css']
 })
-export class TopBarComponent implements OnInit {
-
-  constructor() { }
-
-  ngOnInit() {
-  }
+export class TopBarComponent {
 
 }

aio/content/examples/getting-started-v0/src/main.ts

@@ -1,11 +1,12 @@
 import { enableProdMode } from '@angular/core';
 import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
-import { environment } from './environments/environment';
 
 import { AppModule } from './app/app.module';
+import { environment } from './environments/environment';
 
 if (environment.production) {
   enableProdMode();
 }
 
-platformBrowserDynamic().bootstrapModule(AppModule);
+platformBrowserDynamic().bootstrapModule(AppModule)
+  .catch(err => console.error(err));