[parity] node:perf_hooks — the perf classes have no real prototype: no illegal-constructor guard, Symbol.toStringTag, or descriptors #8231

Split out of #6766 after PR #8229 took node:perf_hooks from 86/148 to 132/148. These six cases all need the same missing machinery — real prototype objects for the native perf classes, carrying brand checks and per-property descriptors — so they are one piece of work rather than six.

Perry models the perf classes as bound-method closures and their instances as plain shaped objects. That gets instanceof right (via the class-id chain) but leaves no prototype object to hang Symbol.toStringTag, descriptors, or a construct trap on.

Failing cases

test-parity/node-suite/perf_hooks/, reproduce with ./run_parity_tests.sh --suite node-suite --module perf_hooks.

global/illegal-constructors — the classes are not constructible in Node:

node:   Performance: TypeError ERR_ILLEGAL_CONSTRUCTOR   (same for PerformanceEntry,
        PerformanceMeasure, PerformanceObserverEntryList, PerformanceResourceTiming)
perry:  Performance: no throw

shapes/prototype-tags — Symbol.toStringTag on each prototype:

node:   mark [object PerformanceMark] / measure [object PerformanceMeasure] / observer [object PerformanceObserver]
        PerformanceMark PerformanceMark   (and the same for Measure/Observer/ObserverEntryList/ResourceTiming)
perry:  mark [object Object] / measure [object Object] / observer [object Object]
        (the Ctor.prototype descriptor reads produce nothing)

shapes/public-descriptors — Object.getOwnPropertyDescriptor(Object.getPrototypeOf(performance), "now") etc:

node:   now function true true true          (value/writable/enumerable/configurable)
        timeOrigin function undefined true true          (an accessor)
        supportedEntryTypes function undefined false true
perry:  TypeError: Cannot read properties of undefined (reading 'value')

resource-timing/illegal-constructor-tag:

node:   tag: PerformanceResourceTiming / TypeError ERR_ILLEGAL_CONSTRUCTOR
perry:  tag: undefined / no throw

mark/direct-constructor — new PerformanceMark("direct", { startTime: 7, detail }) is the one perf class Node does let you construct:

node:   shape: direct mark 7 0 / instances: true true / detail cloned: {"value":1} true
perry:  shape: undefined undefined undefined undefined / instances: false false

observer/entry-list-validation — the wrong-receiver arm, which needs a real PerformanceObserverEntryList.prototype.getEntries with a brand check:

node:   wrong receiver TypeError ERR_INVALID_THIS
perry:  wrong receiver TypeError undefined

(the other three arms in that file pass)

Where

crates/perry-runtime/src/perf_hooks.rs (entry shapes, is_perf_entry_object_instance_of), crates/perry-runtime/src/object/native_module/callable_exports.rs (nm_attach_perf_hooks, which is where PerformanceObserver.supportedEntryTypes is already hung off the class closure as a dynamic prop — the same hook could carry a prototype).