[parity] node:perf_hooks timerify — async settlement, construct, entry arguments, and name/length descriptors

[proggeramlug]

Split out of #6766 after PR #8229, which made timerify's histogram option real (timerify(fn, { histogram }) now validates the handle and records durations) but left five behaviours unimplemented. All five live in perf_timerify_wrapper / js_perf_timerify in crates/perry-runtime/src/perf_hooks.rs.

Reproduce with ./run_parity_tests.sh --suite node-suite --module perf_hooks.

1. Async settlement — the wrapper records at return, not at settle (2 cases)

Node defers the measurement until the returned promise settles. Perry records synchronously, so an async function's entry/sample lands one turn early.

timerify/async-fulfill:

node:   pending records: 0 / result: 5 / settled records: 1
perry:  pending records: 1 / result: 5 / settled records: 0

timerify/histogram-async:

node:   pending: 0 / result: 6 / settled: 1 / positive: true
perry:  pending: 1

Needs the wrapper to detect a thenable result and attach a native continuation that emits the entry (and records into the optional histogram) on settlement.

2. new through the wrapper (timerify/constructor)

class Value { marker = 1 }
const Wrapped = timerify(Value);
new Wrapped()          // node: a Value instance, marker 1;  perry: instance false, marker undefined
Wrapped()              // node: TypeError (class called without new);  perry: "call ok"

3. Entry arguments (timerify/entry-arguments)

Node's function entry carries the call arguments both as entry.detail (an array) and as indexed properties on the entry itself:

`${entry.detail.length}:${entry.detail[0]}:${entry.detail[1] === argument}:${entry[0]}:${entry[1] === argument}`
node:   arguments: 2:1:true:1:true
perry:  TypeError: Cannot read properties of null (reading 'length')   (detail is null)

4. name/length descriptor flags (timerify/name-length-descriptors)

The values are already right; the attributes are not. Node defines both as enumerable and non-configurable on the wrapper:

node:   name timerified sample false true false     (value, writable, enumerable, configurable)
        length 2 false true false
perry:  name timerified sample false false true
        length 2 false false true

This one needs per-property descriptor attributes on a closure, so it may be blocked on the same machinery as #8231.