handle missing ResizeObserver!!!

Author: kseamon

src/cdk/table/sticky-styler.ts

@@ -34,8 +34,8 @@ export const STICKY_DIRECTIONS: StickyDirection[] = ['top', 'bottom', 'left', 'r
  */
 export class StickyStyler {
   private _elemSizeCache = new WeakMap<HTMLElement, {width: number; height: number}>();
-  private _resizeObserver = window?.ResizeObserver
-    ? new window.ResizeObserver(entries => this._updateCachedSizes(entries))
+  private _resizeObserver = globalThis?.ResizeObserver
+    ? new globalThis.ResizeObserver(entries => this._updateCachedSizes(entries))
     : null;
   private _updatedStickyColumnsParamsToReplay: UpdateStickyColumnsParams[] = [];
   private _stickyColumnsReplayTimeout: number | null = null;