Inline tests for integration/react-18

Adds indirection when trying to find a failing test or focusing on one.

Author: eps1lon

test/integration/react-18/test/basics.js

@@ -1,5 +1,5 @@
 import React, { Suspense } from 'react'
-import { createStreamingData } from '../../test/streaming-data'
+import { createStreamingData } from './streaming-data'
 
 const Data = createStreamingData()