[refactor] Migrate manager code from src/composables to src/workbench/extensions/manager (2/2) (#5722)

## Summary

Continuation of

- https://github.com/Comfy-Org/ComfyUI_frontend/pull/5662

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5722-refactor-Migrate-manager-code-from-src-composables-to-src-workbench-extensions-manag-2766d73d36508165a4f5e1940967248f)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Alexander Brown <drjkl@comfy.org>

tests-ui/tests/components/dialog/footer/ManagerProgressFooter.test.ts

@@ -22,12 +22,15 @@ vi.mock('@/stores/dialogStore')
 vi.mock('@/platform/settings/settingStore')
 vi.mock('@/stores/commandStore')
 vi.mock('@/workbench/extensions/manager/services/comfyManagerService')
-vi.mock('@/composables/useConflictDetection', () => ({
-  useConflictDetection: vi.fn(() => ({
-    conflictedPackages: { value: [] },
-    performConflictDetection: vi.fn().mockResolvedValue(undefined)
-  }))
-}))
+vi.mock(
+  '@/workbench/extensions/manager/composables/useConflictDetection',
+  () => ({
+    useConflictDetection: vi.fn(() => ({
+      conflictedPackages: { value: [] },
+      performConflictDetection: vi.fn().mockResolvedValue(undefined)
+    }))
+  })
+)
 
 // Mock useEventListener to capture the event handler
 let reconnectHandler: (() => void) | null = null