next.js

ec20e246 - [Traces] Await the flush of the trace write stream to make sure trace file is written (#57641)

[Traces] Await the flush of the trace write stream to make sure trace file is written (#57641) This PR fixes an issue where sometimes the `.next/trace` file would not be written at the end of a build. The process was not waiting for the write stream to be flushed before closing, losing the contents of the trace, which was especially visible when using `experimental-compile`.