fix: show stop state for active instant run button (#8917)

Switch the Run (Instant) actionbar button into a stop-state while
instant auto-queue is actively running, so users can explicitly stop
that mode from the same control.

Figma context:
https://www.figma.com/design/LVilZgHGk5RwWOkVN6yCEK/Queue-Progress-Modal?node-id=3381-6181&m=dev

## Screenshots (if applicable)



https://github.com/user-attachments/assets/a4aca6ab-eb0c-41a2-9f05-3af7ecf2bedd

src/services/autoQueueService.ts

@@ -1,6 +1,7 @@
 import { api } from '@/scripts/api'
 import { app } from '@/scripts/app'
 import {
+  isInstantRunningMode,
   useQueuePendingTaskCountStore,
   useQueueSettingsStore
 } from '@/stores/queueStore'
@@ -29,7 +30,7 @@ export function setupAutoQueueHandler() {
       internalCount = queueCountStore.count
       if (!internalCount && !app.lastExecutionError) {
         if (
-          queueSettingsStore.mode === 'instant' ||
+          isInstantRunningMode(queueSettingsStore.mode) ||
           (queueSettingsStore.mode === 'change' && graphHasChanged)
         ) {
           graphHasChanged = false