The Fetch API was meant to only be disabled in tests.
Since wasm_exec.js defines a global 'process' object,
it ended up being disabled anywhere that script is used.
Make the heuristic stricter so that it's less likely to
trigger anywhere but when testing js/wasm using Node.js.
For #57613.
Fixes #60808.
Change-Id: Ief8def802b466ef4faad16daccefcfd72e4398b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/503675
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Damien Neil <dneil@google.com>