fix: worker logs should still support color (#84024)
Logs emitted from the static export worker lost their ANSI colors
because the worker process starts with piped stdio, so picocolors
disables coloring. Most terminal-color helpers treat ANSI styling as a
TTY-only feature. At module load it checks process.stdout.isTTY; when a
process’ stdout is piped to another stream (as is the case in our export
worker), Node marks it as non‑TTY.
To fix, when spawning the worker, this PR will re-check color support
using the parent’s TTY/env state and set `FORCE_COLOR=1` only when the
parent would have colored output (respecting user opt-outs).
