Do not fail when trying to find DE window with cross origin

src/Common/MessageHandler.ts

@@ -48,17 +48,16 @@ export function sendCachedDataMessage<TResponseDataModel>(
 
 export function sendMessage(data: any): void {
   if (canSendMessage()) {
-    const dataExplorerWindow = getDataExplorerWindow(window);
-    if (dataExplorerWindow) {
-      dataExplorerWindow.parent.postMessage(
+    // We try to find data explorer window first, then fallback to current window
+    const portalChildWindow = getDataExplorerWindow(window) || window;
+    portalChildWindow.parent.postMessage(
       {
         signature: "pcIframe",
         data: data
       },
-        dataExplorerWindow.document.referrer
+      portalChildWindow.document.referrer
     );
   }
-  }
 }
 
 // Only exported for unit tests
@@ -66,6 +65,8 @@ 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;
+
+  try {
     // 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) {
@@ -76,6 +77,10 @@ export const getDataExplorerWindow = (currentWindow: Window): Window | undefined
         dataExplorerWindow = dataExplorerWindow.parent;
       }
     }
+  } catch (error) {
+    // This can happen if we come across parent from a different origin
+    dataExplorerWindow = undefined;
+  }
 
   return dataExplorerWindow;
 };