## Summary
Replace `vi.mock('vue-i18n')` stub with a real `createI18n` plugin
instance in `useReconnectingNotification` tests.
## Changes
- **What**: Add `setupComposable()` helper that renders a wrapper
component via `@testing-library/vue` with a real `createI18n` plugin.
Assertions now check translated values
(`'Reconnecting'`/`'Reconnected'`) instead of raw i18n keys. Removes the
brittle `vi.mock('vue-i18n')` stub.
## Review Focus
Straightforward test-only change — the composable requires a component
setup context for `useI18n()`, so we render a thin wrapper via
`@testing-library/vue` with the i18n plugin installed.
Fixes#11153
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-11386-test-use-real-vue-i18n-plugin-in-useReconnectingNotification-tests-3476d73d3650814ba70eea6df91c8bbe)
by [Unito](https://www.unito.io)
---------
Co-authored-by: Alexander Brown <drjkl@comfy.org>
## Summary
Debounce the reconnecting toast with a 1.5s grace period so brief
WebSocket blips don't flash a persistent error banner.
## Problem
After #9543 made all error toasts sticky (no auto-dismiss), brief
WebSocket disconnections (<1s) would show a persistent "Reconnecting..."
error banner that stays until the `reconnected` event fires. On staging,
users see this banner even though jobs are actively executing.
## Changes
- Extract reconnection toast logic from `GraphView.vue` into
`useReconnectingNotification` composable
- Add 1.5s delay (via `useTimeoutFn` from VueUse) before showing the
reconnecting toast
- If `reconnected` fires within the delay window, suppress both the
error and success toasts entirely
- Clean up unused `useToast`/`useI18n` imports from `GraphView.vue`
## Testing
- Sub-1.5s disconnections: no toast shown
- Longer disconnections (>1.5s): error toast shown, cleared with success
toast on reconnect
- Setting `Comfy.Toast.DisableReconnectingToast`: no toasts shown at all
- Multiple rapid `reconnecting` events: only one toast shown
6 unit tests covering all scenarios.
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10997-fix-debounce-reconnecting-toast-to-prevent-false-positive-banner-33d6d73d3650810289e8f57c046972f1)
by [Unito](https://www.unito.io)
---------
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>
