Fix incorrect usage of TelemetryProcessor (#221)

* Fix incorrect usage of TelemetryProcessor

* Address feedback

src/Utils/WindowUtils.ts

@@ -0,0 +1,17 @@
+export const getDataExplorerWindow = (currentWindow: Window): Window | undefined => {
+  // Start with the current window and traverse up the parent hierarchy to find a window
+  // with `dataExplorerPlatform` property
+  let dataExplorerWindow: Window | undefined = currentWindow;
+  // TODO: Need to `any` here since the window imports Explorer which can't be in strict mode yet
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  while (dataExplorerWindow && (dataExplorerWindow as any).dataExplorerPlatform === undefined) {
+    // If a window does not have a parent, its parent property is a reference to itself.
+    if (dataExplorerWindow.parent === dataExplorerWindow) {
+      dataExplorerWindow = undefined;
+    } else {
+      dataExplorerWindow = dataExplorerWindow.parent;
+    }
+  }
+
+  return dataExplorerWindow;
+};