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/platform/telemetry/useTelemetry.test.ts

@@ -1,5 +1,7 @@
 import { beforeEach, describe, expect, it, vi } from 'vitest'
 
+import { useTelemetry } from '@/platform/telemetry'
+
 vi.mock('@/platform/distribution/types', () => ({
   isCloud: false
 }))
@@ -9,17 +11,14 @@ describe('useTelemetry', () => {
     vi.clearAllMocks()
   })
 
-  it('should return null when not in cloud distribution', async () => {
-    const { useTelemetry } = await import('@/platform/telemetry')
+  it('should return null when not in cloud distribution', () => {
     const provider = useTelemetry()
 
     // Should return null for OSS builds
     expect(provider).toBeNull()
-  }, 10000)
-
-  it('should return null consistently for OSS builds', async () => {
-    const { useTelemetry } = await import('@/platform/telemetry')
+  })
 
+  it('should return null consistently for OSS builds', () => {
     const provider1 = useTelemetry()
     const provider2 = useTelemetry()