refactor: use isActiveJobState instead of duplicated cancellableStates (#8572)

## Summary

Eliminates code duplication by replacing local `cancellableStates`
arrays with the centralized `isActiveJobState` utility function.

## Changes

- Remove duplicated `cancellableStates: JobState[] = ['pending',
'initialization', 'running']` from:
  - `src/composables/queue/useJobActions.ts`
  - `src/storybook/mocks/useJobActions.ts`
- Import and use `isActiveJobState` from `src/utils/queueUtil.ts`
instead

## Testing

- Typecheck passes
- Lint passes
- Related queue tests pass

Fixes #7947

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8572-refactor-use-isActiveJobState-instead-of-duplicated-cancellableStates-2fc6d73d365081f89decfc869fa952a0)
by [Unito](https://www.unito.io)


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Refactor**
  * Internal code improvements to simplify job state management logic.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

src/composables/queue/useJobActions.ts

@@ -5,7 +5,7 @@ import { useI18n } from 'vue-i18n'
 import { useErrorHandling } from '@/composables/useErrorHandling'
 import type { JobListItem } from '@/composables/queue/useJobList'
 import { useJobMenu } from '@/composables/queue/useJobMenu'
-import type { JobState } from '@/types/queue'
+import { isActiveJobState } from '@/utils/queueUtil'
 
 export type JobAction = {
   icon: string
@@ -13,8 +13,6 @@ export type JobAction = {
   variant: 'destructive' | 'secondary' | 'textonly'
 }
 
-const CANCELLABLE_STATES: JobState[] = ['pending', 'initialization', 'running']
-
 export function useJobActions(
   job: MaybeRefOrGetter<JobListItem | null | undefined>
 ) {
@@ -36,10 +34,7 @@ export function useJobActions(
       return false
     }
 
-    return (
-      currentJob.showClear !== false &&
-      CANCELLABLE_STATES.includes(currentJob.state)
-    )
+    return currentJob.showClear !== false && isActiveJobState(currentJob.state)
   })
 
   const runCancelJob = wrapWithErrorHandlingAsync(async () => {

src/storybook/mocks/useJobActions.ts

@@ -3,10 +3,9 @@ import type { MaybeRefOrGetter } from 'vue'
 
 import type { JobAction } from '../../composables/queue/useJobActions'
 import type { JobListItem } from '../../composables/queue/useJobList'
-import type { JobState } from '../../types/queue'
+import { isActiveJobState } from '../../utils/queueUtil'
 
 const actionsByJobId = ref<Record<string, JobAction[]>>({})
-const cancellableStates: JobState[] = ['pending', 'initialization', 'running']
 const cancelAction: JobAction = {
   icon: 'icon-[lucide--x]',
   label: 'Cancel',
@@ -33,10 +32,7 @@ export function useJobActions(
       return configuredActions.length > 0
     }
 
-    return (
-      currentJob.showClear !== false &&
-      cancellableStates.includes(currentJob.state)
-    )
+    return currentJob.showClear !== false && isActiveJobState(currentJob.state)
   })
 
   async function runCancelJob() {