message: Fix  flaky test sharedText.test.ts
  Use the newly introduced "isSynchronized" to make sure we wait until change are propagate (instead of using a setTimeout)
diff: @@ -60,7 +60,7 @@ describe("sharedText", () => {
  await page.type('[class=flow-view]', word, { delay: 10 });
  // wait for all changes to propagate
  - await new Promise((resolve)=>setTimeout(resolve, 10));
  + await page.waitFor(() => window["FluidLoader"].isSynchronized());
  // The text returned has extra spaces so remove the extra spaces
  let textLeft = await getText(0);
  