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/stores/queueStore.ts

@@ -627,7 +627,20 @@ export const useQueuePendingTaskCountStore = defineStore(
   }
 )
 
-export type AutoQueueMode = 'disabled' | 'instant' | 'change'
+export type AutoQueueMode =
+  | 'disabled'
+  | 'change'
+  | 'instant-idle'
+  | 'instant-running'
+
+export const isInstantMode = (
+  mode: AutoQueueMode
+): mode is 'instant-idle' | 'instant-running' =>
+  mode === 'instant-idle' || mode === 'instant-running'
+
+export const isInstantRunningMode = (
+  mode: AutoQueueMode
+): mode is 'instant-running' => mode === 'instant-running'
 
 export const useQueueSettingsStore = defineStore('queueSettingsStore', {
   state: () => ({