React: Remove unneeded async function in ConvexAuthState (#28407)

It has no impact, it was left over from when the setAuth call used to be async.

GitOrigin-RevId: 673eb6f18f97433a5ab300c75bd001899878dd7f

npm-packages/convex/src/react/ConvexAuthState.tsx

@@ -91,17 +91,12 @@ export function ConvexProviderWithAuth({
 
   useEffect(() => {
     let isThisEffectRelevant = true;
-
-    async function setToken() {
+    if (isAuthenticated) {
       client.setAuth(fetchAccessToken, (isAuthenticated) => {
         if (isThisEffectRelevant) {
           setIsConvexAuthenticated(isAuthenticated);
         }
       });
-    }
-
-    if (isAuthenticated) {
-      void setToken();
       return () => {
         isThisEffectRelevant = false;