Revert "fix(autocomplete): auto-highlighted first option not display correctly if the floating label is disabled" (#14505)

* Revert "Revert "fix(snack-bar): announcing same message twice to screen readers" (#14494)"

This reverts commit e9466a4.

* Revert "Revert "fix(dialog,bottom-sheet): invert backdrop color on dark themes" (#14492)"

This reverts commit 3eb7e9c.

* Revert "Revert "fix(menu): allow text wrapping in menu items" (#14493)"

This reverts commit a3da8d2.

* Revert "build: update nodejs bazel rules (#14466)"

This reverts commit a3fef46.

* Revert "docs(form-field): native select reset values not working in examples (#14236)"

This reverts commit 97f52c0.

* Revert "fix(menu): allow text wrapping in menu items (#11430)"

This reverts commit 3661abe.

* Revert "fix(dialog,bottom-sheet): invert backdrop color on dark themes (#13065)"

This reverts commit fe96f38.

* Revert "build: replace deprecated tslint rule with compiler option (#13186)"

This reverts commit 5dfa45f.

* Revert "fix(snack-bar): announcing same message twice to screen readers (#13298)"

This reverts commit 3fb4b23.

* Revert "feat(drag-drop): allow entire group of drop lists to be disabled (#14179)"

This reverts commit 94e76de.

* Revert "fix(drag-drop): prevent text selection while dragging on Safari (#14405)"

This reverts commit 220e388.

* Revert "fix(autocomplete): auto-highlighted first option not display correctly if the floating label is disabled (#14414)"

This reverts commit 53d2b58.

Author: vivian-hu-zz

src/lib/autocomplete/autocomplete-trigger.ts

@@ -493,7 +493,6 @@ export class MatAutocompleteTrigger implements ControlValueAccessor, OnDestroy {
         switchMap(() => {
           this._resetActiveItem();
           this.autocomplete._setVisibility();
-          this._changeDetectorRef.detectChanges();
 
           if (this.panelOpen) {
             this._overlayRef!.updatePosition();

src/lib/autocomplete/autocomplete.spec.ts

@@ -1644,22 +1644,6 @@ describe('MatAutocomplete', () => {
           .toContain('mat-active', 'Expected first option to be highlighted.');
     }));
 
-    it('should be able to preselect the first option when the floating label is disabled',
-      fakeAsync(() => {
-        fixture.componentInstance.floatLabel = 'never';
-        fixture.componentInstance.trigger.autocomplete.autoActiveFirstOption = true;
-        fixture.detectChanges();
-
-        fixture.componentInstance.trigger.openPanel();
-        fixture.detectChanges();
-        zone.simulateZoneExit();
-        // Note: should not have a detectChanges call here
-        // in order for the test to fail when it's supposed to.
-
-        expect(overlayContainerElement.querySelectorAll('mat-option')[0].classList)
-            .toContain('mat-active', 'Expected first option to be highlighted.');
-      }));
-
     it('should be able to configure preselecting the first option globally', fakeAsync(() => {
       overlayContainer.ngOnDestroy();
       fixture.destroy();