fix(material-experimental/mdc-progress-bar): run resize observer outside zone

Runs the `ResizeObserver` from the progress bar outside of the `NgZone` so that it doesn't
trigger change detection.

Author: crisbeto

src/material-experimental/mdc-progress-bar/progress-bar.ts

@@ -92,11 +92,13 @@ export class MatProgressBar extends _MatProgressBarMixinBase implements AfterVie
       (this._rootElement.style as any)[styleProperty] = value;
     },
     getWidth: () => this._rootElement.offsetWidth,
-    attachResizeObserver: (callback) => {
-      if ((typeof window !== 'undefined') && window.ResizeObserver) {
-        const ro = new ResizeObserver(callback);
-        ro.observe(this._rootElement);
-        return ro;
+    attachResizeObserver: callback => {
+      if (typeof window !== 'undefined' && window.ResizeObserver) {
+        return this._ngZone.runOutsideAngular(() => {
+          const resizeObserver = new ResizeObserver(callback);
+          resizeObserver.observe(this._rootElement);
+          return resizeObserver;
+        });
       }
 
       return null;