Update to Angular 19 (#1)

Reviewed-on: #1

src/app/editor/map-field/map-field.component.ts

@@ -16,15 +16,14 @@ import { ProtoFieldComponent } from '../proto-field/proto-field.component';
 const keyIsEmpty = (key: string | number) => key == null || key === '';
 
 @Component({
-  selector: 'app-map-field',
-  standalone: true,
-  imports: [
-    CommonModule,
-    forwardRef(() => ProtoFieldComponent),
-    MatIconModule,
-    MatButtonModule,
-  ],
-  template: `<h3>{{ label() }}</h3>
+    selector: 'app-map-field',
+    imports: [
+        CommonModule,
+        forwardRef(() => ProtoFieldComponent),
+        MatIconModule,
+        MatButtonModule,
+    ],
+    template: `<h3>{{ label() }}</h3>
     @if(valuePairs()) { @for(value of valuePairs(); track $index) {
     <div class="row-wrapper">
       <app-proto-field
@@ -45,8 +44,8 @@ const keyIsEmpty = (key: string | number) => key == null || key === '';
     <button mat-icon-button class="add-button" (click)="add()">
       <mat-icon>add</mat-icon>
     </button>`,
-  styleUrl: './map-field.component.scss',
-  changeDetection: ChangeDetectionStrategy.OnPush,
+    styleUrl: './map-field.component.scss',
+    changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class MapFieldComponent {
   label = input<string>();