fix sticky send race

playwright/spa-call-sticky.spec.ts

@@ -28,7 +28,7 @@ async function setupTwoUserSpaCall(
   await page.goto("/");
 
   let androlHasSentStickyEvent = false;
-
+  const androlResolver = Promise.withResolvers<void>();
   await interceptEventSend(
     page,
     // This room is not encrypted, so the event is sent in clear
@@ -36,6 +36,7 @@ async function setupTwoUserSpaCall(
     (req) => {
       androlHasSentStickyEvent =
         androlHasSentStickyEvent || isStickySend(req.url());
+      androlResolver.resolve();
     },
   );
 
@@ -53,6 +54,7 @@ async function setupTwoUserSpaCall(
 
   let pevaraHasSentStickyEvent = false;
 
+  const paveraResolver = Promise.withResolvers<void>();
   await interceptEventSend(
     guestPage,
     // This room is not encrypted, so the event is sent in clear
@@ -60,6 +62,7 @@ async function setupTwoUserSpaCall(
     (req) => {
       pevaraHasSentStickyEvent =
         pevaraHasSentStickyEvent || isStickySend(req.url());
+      paveraResolver.resolve();
     },
   );
 
@@ -70,7 +73,9 @@ async function setupTwoUserSpaCall(
     "2_0",
   );
   // Assert both sides have sent sticky membership events
+  await androlResolver.promise;
   expect(androlHasSentStickyEvent).toEqual(true);
+  await paveraResolver.promise;
   expect(pevaraHasSentStickyEvent).toEqual(true);
 
   return { guestPage };