fix(expansion): disable all animations when using NoopAnimationsModule

Disables all of the expansion panel animations if it's inside a module with the `NoopAnimationsModule`. Also removes the `mat-elevation-transition` from the expansion panel, because it hasn't been doing anything for a while since it gets overwritten by the `margin` transition below.

Relates to #10590.

Author: crisbeto

src/lib/expansion/expansion-panel.scss

@@ -1,10 +1,11 @@
 @import '../core/style/variables';
 @import '../core/style/elevation';
+@import '../core/style/noop-animation';
 @import '../../cdk/a11y/a11y';
 
 .mat-expansion-panel {
-  @include mat-elevation-transition;
   @include mat-overridable-elevation(2);
+  @include _noop-animation();
   box-sizing: content-box;
   display: block;
   margin: 0;

src/lib/expansion/expansion-panel.ts

@@ -26,12 +26,14 @@ import {
   SkipSelf,
   ViewContainerRef,
   ViewEncapsulation,
+  Inject,
 } from '@angular/core';
 import {Subject} from 'rxjs';
 import {filter, startWith, take} from 'rxjs/operators';
 import {MatAccordion} from './accordion';
 import {matExpansionAnimations} from './expansion-animations';
 import {MatExpansionPanelContent} from './expansion-panel-content';
+import {ANIMATION_MODULE_TYPE} from '@angular/platform-browser/animations';
 
 
 /** MatExpansionPanel's states. */
@@ -66,6 +68,7 @@ let uniqueId = 0;
     'class': 'mat-expansion-panel',
     '[class.mat-expanded]': 'expanded',
     '[class.mat-expansion-panel-spacing]': '_hasSpacing()',
+    '[class._mat-animation-noopable]': `_animationMode === 'NoopAnimations'`,
   }
 })
 export class MatExpansionPanel extends CdkAccordionItem
@@ -96,7 +99,8 @@ export class MatExpansionPanel extends CdkAccordionItem
   constructor(@Optional() @SkipSelf() accordion: MatAccordion,
               _changeDetectorRef: ChangeDetectorRef,
               _uniqueSelectionDispatcher: UniqueSelectionDispatcher,
-              private _viewContainerRef: ViewContainerRef) {
+              private _viewContainerRef: ViewContainerRef,
+              @Optional() @Inject(ANIMATION_MODULE_TYPE) public _animationMode?: string) {
     super(accordion, _changeDetectorRef, _uniqueSelectionDispatcher);
     this.accordion = accordion;
   }