skip flaky js integration test (#1232)

saw some flakiness in comparative evals stuff too, but not skipping
those because seems less common

if we do want to remove comparative evals:
c07164a

js/src/tests/vercel.int.test.ts

@@ -102,7 +102,7 @@ test("generateText with image", async () => {
   expect(storedRun.id).toEqual(runId);
 });
 
-test("streamText", async () => {
+test.skip("streamText", async () => {
   const runId = uuid();
   const result = await streamText({
     model: openai("gpt-4o-mini"),