refactor(chat): move the scaling test helper out of the route tree

It is a dependency-free complexity-ratio helper shared by a route-tree test
and a components/chat test, so living under app/workspace made the canonical
tree import back into the route tree. Moves to components/chat, where both
consumers reach it in the allowed direction.

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/home/components/message-content/components/special-tags/special-tags.test.ts

@@ -14,14 +14,14 @@ vi.mock('@/lib/auth/auth-client', () => ({
   useSession: vi.fn(() => ({ data: null, isPending: false })),
 }))
 
+import { scalingRatioOver4x } from '@/components/chat/scaling-test-helpers'
 import type { ContentSegment, IndexOfCache } from '@/components/chat/special-tags/parse'
 import {
   memoizedIndexOf,
   parseQuestionTagBody,
   parseSpecialTags,
   SPECIAL_TAG_NAMES,
 } from '@/components/chat/special-tags/parse'
-import { scalingRatioOver4x } from '@/app/workspace/[workspaceId]/home/components/message-content/components/scaling-test-helpers'
 
 /**
  * What a reader actually sees: the renderer concatenates adjacent text segments

apps/sim/components/chat/chat-content/chat-content.test.ts

@@ -3,7 +3,7 @@
  */
 import { describe, expect, it } from 'vitest'
 import { sanitizeChatDisplayContent } from '@/components/chat/chat-content/chat-sanitize'
-import { scalingRatioOver4x } from '@/app/workspace/[workspaceId]/home/components/message-content/components/scaling-test-helpers'
+import { scalingRatioOver4x } from '@/components/chat/scaling-test-helpers'
 
 describe('sanitizeChatDisplayContent', () => {
   it('unwraps workspace resource tags from inline code spans', () => {