Align OpenAI token params test location with test layout

Move openai-token-params.test.mjs from src/services/apis to
tests/unit/services/apis so test files follow the same layout as other
unit tests.

Update the import path after the move. This is a consistency-only change
and does not alter runtime behavior.

cc #922 #924

Author: PeterDaveHello

…rvices/apis/openai-token-params.test.mjs …rvices/apis/openai-token-params.test.mjssrc/services/apis/openai-token-params.test.mjs renamed to tests/unit/services/apis/openai-token-params.test.mjs src/services/apis/openai-token-params.test.mjs renamed to tests/unit/services/apis/openai-token-params.test.mjs

@@ -1,6 +1,6 @@
 import test from 'node:test'
 import assert from 'node:assert/strict'
-import { getChatCompletionsTokenParams } from './openai-token-params.mjs'
+import { getChatCompletionsTokenParams } from '../../../../src/services/apis/openai-token-params.mjs'
 
 test('uses max_completion_tokens for gpt-5.x chat models', () => {
   assert.deepEqual(getChatCompletionsTokenParams('openai', 'gpt-5.2-chat-latest', 1024), {