Upcoming change to build config

[hashseed]

This upcoming change will change the run_mksnapshot build target to produce one more file. The background is that we want to make builtin code objects isolate-independent and move them off V8's heap and embed them in the binary instead.

I don't think this will cause breakages in the short term, since this configuration is gated by a build flag. It makes sense to look out for this and maybe port to gyp though.

[targos]

For reference, commits that landed:
v8/v8@e6476f8
v8/v8@f45eca7

[targos]

Also: v8/v8@abcc28c

[refack]

@targos this still hasn't been done, right? I'll fold this into https://github.com/refack/node/tree/gyp-v8-embedded-builtins

[targos]

This hasn't been done AFAIK

[targos]

Done in nodejs/node#22920