test(material/menu): enable exhaustive checks for all tests

Removes the opt out of exhaustive checks from the menu tests. The issue was only in one test that wasn't set up correctly.

(cherry picked from commit 830e39e)

Author: crisbeto

src/material/menu/menu.spec.ts

@@ -22,7 +22,6 @@ import {
   Input,
   OnDestroy,
   Output,
-  provideCheckNoChangesConfig,
   QueryList,
   signal,
   TemplateRef,
@@ -1744,7 +1743,6 @@ describe('MatMenu', () => {
       direction = 'ltr';
       TestBed.resetTestingModule().configureTestingModule({
         providers: [
-          provideCheckNoChangesConfig({exhaustive: false}),
           {
             provide: Directionality,
             useValue: {
@@ -1907,7 +1905,7 @@ describe('MatMenu', () => {
         .withContext('Expected two open menus')
         .toBe(2);
 
-      items[1].componentInstance.disabled = true;
+      fixture.componentInstance.secondItemDisabled = true;
       fixture.changeDetectorRef.markForCheck();
       fixture.detectChanges();
 
@@ -1932,7 +1930,7 @@ describe('MatMenu', () => {
 
       const item = fixture.debugElement.query(By.directive(MatMenuItem))!;
 
-      item.componentInstance.disabled = true;
+      fixture.componentInstance.firstItemDisabled = true;
       fixture.changeDetectorRef.markForCheck();
       fixture.detectChanges();
 
@@ -2728,8 +2726,9 @@ class CustomMenu {
       <button mat-menu-item
         id="level-one-trigger"
         [matMenuTriggerFor]="levelOne"
+        [disabled]="firstItemDisabled"
         #levelOneTrigger="matMenuTrigger">One</button>
-      <button mat-menu-item>Two</button>
+      <button mat-menu-item [disabled]="secondItemDisabled">Two</button>
       @if (showLazy) {
         <button mat-menu-item
           id="lazy-trigger"
@@ -2779,6 +2778,9 @@ class NestedMenu {
   @ViewChild('lazy') lazyMenu: MatMenu;
   @ViewChild('lazyTrigger') lazyTrigger: MatMenuTrigger;
   showLazy = false;
+
+  firstItemDisabled = false;
+  secondItemDisabled = false;
 }
 
 @Component({