✅(react) fix flaky test

On CI, a test times out frequently. We increase the timeout
threshold to prevent that..

Resolve #355

packages/react/src/components/Button/index.spec.tsx

@@ -97,7 +97,7 @@ describe("<Button/>", () => {
     expect(
       tokens.themes.default.components.button["border-radius"],
     ).toBeDefined();
-  });
+  }, 10000);
 
   it("renders with className", async () => {
     render(<Button className="my-custom-class" />);