test(desktop): wait for relay connect before restart-close check

The service-restart backoff test waited for the channel list to paint
before firing the 1012 close. The channel list is Tauri-backed and
renders before the websocket is up, so with three rejected dials the
session was still in its backoff loop when the test looked for a socket
to close and found none. Now that preconnect dials immediately instead
of waiting for requestIdleCallback, the first rejected attempt happens
early enough to expose the gap deterministically.

Wait for the connected state instead. The test still fails with the 1012
backoff reset disabled, so it guards the same behavior.

Co-authored-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>
Signed-off-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>

desktop/tests/e2e/relay-reconnect.spec.ts

@@ -368,9 +368,16 @@ test("service restart close resets accumulated backoff", async ({ page }) => {
     websocketConnectErrors: ["down 1", "down 2", "down 3"],
   });
   await page.goto("/");
-  await expect(page.getByTestId("channel-general")).toBeVisible({
-    timeout: 15_000,
-  });
+  // Three rejected dials put the session deep in its backoff loop before it
+  // connects; wait for that connect rather than for the Tauri-backed channel
+  // list, which paints long before the websocket is up.
+  await expect
+    .poll(
+      () =>
+        page.evaluate(() => window.__BUZZ_E2E_GET_RELAY_CONNECTION_STATE__?.()),
+      { timeout: 15_000 },
+    )
+    .toBe("connected");
 
   const startedAt = Date.now();
   await restartMockWebsockets(page);