Remove queue sidebar tab (#6724)

## Summary
- drop the queue sidebar entry, its component, and the supporting
composable so only the overlay-based queue UI remains
- clean up the related tests and keybindings so nothing references the
removed tab
- prune the unused queue task card components to keep the repo tidy
- remove unused queue sidebar translations and command strings across
all locales

## Testing
- pnpm typecheck
- pnpm lint:fix

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6724-Remove-queue-sidebar-tab-2ae6d73d3650811db0d4c5ad4c5ffc8d)
by [Unito](https://www.unito.io)

---------

Co-authored-by: pythongosssss <125205205+pythongosssss@users.noreply.github.com>
Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: Jin Yi <jin12cc@gmail.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>
Co-authored-by: Johnpaul Chiwetelu <49923152+Myestery@users.noreply.github.com>
Co-authored-by: Christian Byrne <cbyrne@comfy.org>
Co-authored-by: Comfy Org PR Bot <snomiao+comfy-pr@gmail.com>
Co-authored-by: christian-byrne <72887196+christian-byrne@users.noreply.github.com>

src/locales/es/commands.json

@@ -281,10 +281,6 @@
     "label": "Alternar Barra Lateral de Biblioteca de Nodos",
     "tooltip": "Biblioteca de Nodos"
   },
-  "Workspace_ToggleSidebarTab_queue": {
-    "label": "Alternar Barra Lateral de Cola",
-    "tooltip": "Cola"
-  },
   "Workspace_ToggleSidebarTab_workflows": {
     "label": "Alternar Barra Lateral de Flujos de Trabajo",
     "tooltip": "Flujos de Trabajo"

src/locales/es/main.json

@@ -1670,18 +1670,6 @@
     },
     "openWorkflow": "Abrir flujo de trabajo en el sistema de archivos local",
     "queue": "Cola",
-    "queueTab": {
-      "backToAllTasks": "Volver a todas las tareas",
-      "clearPendingTasks": "Borrar tareas pendientes",
-      "containImagePreview": "Llenar vista previa de la imagen",
-      "coverImagePreview": "Ajustar vista previa de la imagen",
-      "filter": "Filtrar salidas",
-      "filters": {
-        "hideCached": "Ocultar en caché",
-        "hideCanceled": "Ocultar cancelados"
-      },
-      "showFlatList": "Mostrar lista plana"
-    },
     "templates": "Plantillas",
     "themeToggle": "Cambiar tema",
     "workflowTab": {