fix(builtin): give a longer timeout for _create_build_files
fix(builtin): give a longer timeout for _create_build_files

A user reports that their build file generation takes longer than 600 seconds.
It's probably a bug that we are so slow, but let's address that separately (maybe in our work for npm v7)

Also note we could have made this timeout user-configurable, but I think the extra API surface isn't worth the benefit.

Fixes #2231

bazelbuild/rules_nodejs,bazelbuild/rules_nodejs,alexeagle/rules_nodejs,bazelbuild/rules_nodejs,bazelbuild/rules_nodejs,alexeagle/rules_nodejs,alexeagle/rules_nodejs,bazelbuild/rules_nodejs,alexeagle/rules_nodejs