[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>

src/stores/conflictDetectionStore.ts

@@ -1,70 +0,0 @@
-import { defineStore } from 'pinia'
-import { computed, ref } from 'vue'
-
-import type { ConflictDetectionResult } from '@/types/conflictDetectionTypes'
-
-export const useConflictDetectionStore = defineStore(
-  'conflictDetection',
-  () => {
-    // State
-    const conflictedPackages = ref<ConflictDetectionResult[]>([])
-    const isDetecting = ref(false)
-    const lastDetectionTime = ref<string | null>(null)
-
-    // Getters
-    const hasConflicts = computed(() =>
-      conflictedPackages.value.some((pkg) => pkg.has_conflict)
-    )
-
-    const getConflictsForPackageByID = computed(
-      () => (packageId: string) =>
-        conflictedPackages.value.find((pkg) => pkg.package_id === packageId)
-    )
-
-    const bannedPackages = computed(() =>
-      conflictedPackages.value.filter((pkg) =>
-        pkg.conflicts.some((conflict) => conflict.type === 'banned')
-      )
-    )
-
-    const securityPendingPackages = computed(() =>
-      conflictedPackages.value.filter((pkg) =>
-        pkg.conflicts.some((conflict) => conflict.type === 'pending')
-      )
-    )
-
-    // Actions
-    function setConflictedPackages(packages: ConflictDetectionResult[]) {
-      conflictedPackages.value = [...packages]
-    }
-
-    function clearConflicts() {
-      conflictedPackages.value = []
-    }
-
-    function setDetecting(detecting: boolean) {
-      isDetecting.value = detecting
-    }
-
-    function setLastDetectionTime(time: string) {
-      lastDetectionTime.value = time
-    }
-
-    return {
-      // State
-      conflictedPackages,
-      isDetecting,
-      lastDetectionTime,
-      // Getters
-      hasConflicts,
-      getConflictsForPackageByID,
-      bannedPackages,
-      securityPendingPackages,
-      // Actions
-      setConflictedPackages,
-      clearConflicts,
-      setDetecting,
-      setLastDetectionTime
-    }
-  }
-)