test(ui): fail the node refresh by state, not by call count

The spec served the list to the first request and failed the rest. The
first request is not always the one from the page, so the page could
get the failure first and show no list. Serve the list until the page
shows it, then fail the refreshes.

Assisted-by: Claude Code:claude-sonnet-5-5 playwright
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

core/http/react-ui/e2e/nodes-fleet-dashboard.spec.js

@@ -389,14 +389,16 @@ test.describe('Swarm nodes: first run, errors and a phone', () => {
   })
 
   test('keeps the last list and says so when a refresh fails', async ({ page }) => {
-    let calls = 0
+    // Serve the list until the page shows it, then fail every refresh. A call
+    // count would break when another part of the shell reads the list first.
+    let failing = false
     await page.route('**/api/nodes', route => {
-      calls += 1
-      if (calls === 1) return route.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify(baseNodes) })
+      if (!failing) return route.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify(baseNodes) })
       return route.fulfill({ status: 500, contentType: 'application/json', body: '{"error":"database unavailable"}' })
     })
     await page.goto('/app/nodes')
     await expect(rows(page)).toHaveCount(3, { timeout: 15_000 })
+    failing = true
     await expect(page.getByRole('alert')).toContainText('could not be refreshed', { timeout: 15_000 })
     await expect(rows(page)).toHaveCount(3)
   })