v8: enable maglev on supported architectures
Enable V8's new maglev compiler by default on supported architectures. This brings modest performance improvements for short-lived workloads like CLI programs (see the linked issue) and brings Node.js's configuration slightly closer to Google Chrome's.
I marked this change as semver-major because Maglev can theoretically cause performance regressions, although I haven't seen an example of that in the (somewhat limited) benchmarking I've done.
Notable Change Summary: V8's Maglev Compiler is now enabled by default on supported architectures (https://v8.dev/blog/maglev). Maglev improves CPU performance for short-lived CLI programs by around 8%.