fix(turbopack): evaluate pure constructor callees (#100588)
## Summary
Preserve effects from evaluating a constructor callee even when
construction is PURE-annotated. For example, `/*#__PURE__*/ new
(getConstructor())()` must account for calling `getConstructor()`.
Visit the callee before arguments, matching pure call handling. Add
analyzer and execution regressions while preserving upstream PURE
callback handling from #100577.
Independent of the callback stack (#100586 / #100587); rebase whichever
lands later if their `Expr::New` edits overlap.
## Verification
- Full `turbopack-ecmascript` library: 609 tests passed.
- Constructor-callee execution regression passed.
- Rustfmt and diff checks passed. Full monorepo suite not run locally.
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Co-authored-by: vercel-fleet-prod[bot] <318278635+vercel-fleet-prod[bot]@users.noreply.github.com>
