fix(create-gatsby): Shim worker_threads #28064
Merged
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One of the transient dependencies of create-gatsby tries to import
worker_threads
inside a try/catch block to find the pid, and falls-back to 0 if it can't load it. Because rollup hoists this import outside the block it fails on Node 10 where the package is behind a flag. This PR aliases worker_threads to a shim that just returns 0 for the pid.