test: simplify test file mocking patterns (#8320)

Simplifies test mocking patterns across multiple test files.

- Removes redundant `vi.hoisted()` calls
- Cleans up mock implementations
- Removes unused imports and variables

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8320-test-simplify-test-file-mocking-patterns-2f46d73d36508150981bd8ecb99a6a11)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: GitHub Action <action@github.com>

src/composables/useTemplateFiltering.test.ts

@@ -4,6 +4,7 @@ import { nextTick, ref } from 'vue'
 import type { IFuseOptions } from 'fuse.js'
 
 import type { TemplateInfo } from '@/platform/workflow/templates/types/template'
+import { useTemplateFiltering } from '@/composables/useTemplateFiltering'
 
 const defaultSettingStore = {
   get: vi.fn((key: string) => {
@@ -50,9 +51,6 @@ vi.mock('@/scripts/api', () => ({
   }
 }))
 
-const { useTemplateFiltering } =
-  await import('@/composables/useTemplateFiltering')
-
 describe('useTemplateFiltering', () => {
   beforeEach(() => {
     setActivePinia(createPinia())