refactor(material/snack-bar): remove explicit change detection

Now that `OnPush` is the default, we can remove it from the metadata.

Author: crisbeto

src/material/snack-bar/simple-snack-bar.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {ChangeDetectionStrategy, Component, ViewEncapsulation, inject} from '@angular/core';
+import {Component, ViewEncapsulation, inject} from '@angular/core';
 import {MatButton} from '../button';
 import {MatSnackBarRef} from './snack-bar-ref';
 import {MAT_SNACK_BAR_DATA} from './snack-bar-config';
@@ -28,7 +28,6 @@ export interface TextOnlySnackBar {
   styleUrl: 'simple-snack-bar.css',
   exportAs: 'matSnackBar',
   encapsulation: ViewEncapsulation.None,
-  changeDetection: ChangeDetectionStrategy.OnPush,
   imports: [MatButton, MatSnackBarLabel, MatSnackBarActions, MatSnackBarAction],
   host: {
     'class': 'mat-mdc-simple-snack-bar',

src/material/snack-bar/snack-bar.spec.ts

@@ -976,7 +976,6 @@ class DirectiveWithViewContainer {
   selector: 'arbitrary-component',
   template: `@if (childComponentExists()) {<dir-with-view-container></dir-with-view-container>}`,
   imports: [DirectiveWithViewContainer],
-  changeDetection: ChangeDetectionStrategy.OnPush,
 })
 class ComponentWithChildViewContainer {
   @ViewChild(DirectiveWithViewContainer) childWithViewContainer!: DirectiveWithViewContainer;

src/material/snack-bar/snack-bar.zone.spec.ts

@@ -1,5 +1,4 @@
 import {
-  ChangeDetectionStrategy,
   Component,
   Directive,
   ViewChild,
@@ -69,7 +68,6 @@ class DirectiveWithViewContainer {
   selector: 'arbitrary-component',
   template: `@if (childComponentExists()) {<dir-with-view-container></dir-with-view-container>}`,
   imports: [DirectiveWithViewContainer],
-  changeDetection: ChangeDetectionStrategy.OnPush,
 })
 class ComponentWithChildViewContainer {
   @ViewChild(DirectiveWithViewContainer) childWithViewContainer!: DirectiveWithViewContainer;