fixup! fix(material-experimental/mdc-slider): sync ui on mouseenter

Author: wagnermaciel

src/material-experimental/mdc-slider/slider.ts

@@ -626,10 +626,15 @@ export class MatSlider extends _MatSliderMixinBase
   /** The display value of the end thumb. */
   _endValueIndicatorText: string;
 
-  /** Whether the browser supports pointer events. */
+  /**
+   * Whether the browser supports pointer events.
+   *
+   * We exclude iOS to mirror the MDC Foundation. The MDC Foundation cannot use pointer events on
+   * iOS because of this open bug - https://bugs.webkit.org/show_bug.cgi?id=220196.
+   */
   private _SUPPORTS_POINTER_EVENTS = typeof PointerEvent !== 'undefined'
     && !!PointerEvent
-    && !this._platform.IOS; // We exclude iOS to mirror the MDC Foundation
+    && !this._platform.IOS;
 
   /** Subscription to changes to the directionality (LTR / RTL) context for the application. */
   private _dirChangeSubscription: Subscription;