v8: update to latest stable release 15.5.35.13

Depends on https://github.com/lightpanda-io/zig-v8-fork/pull/215 and
https://github.com/lightpanda-io/pkg/pull/3

src/browser/js/Isolate.zig

@@ -58,7 +58,7 @@ pub fn adjustAmountOfExternalAllocatedMemory(self: Isolate, delta: i64) void {
 }
 
 pub fn notifyContextDisposed(self: Isolate) void {
-    _ = v8.v8__Isolate__ContextDisposedNotification(self.handle);
+    v8.v8__Isolate__ContextDisposedNotification(self.handle);
 }
 
 pub fn getHeapStatistics(self: Isolate) v8.HeapStatistics {

src/browser/js/Snapshot.zig

@@ -871,6 +871,7 @@ fn attachClass(comptime JsApi: type, comptime flatten: bool, isolate: *v8.Isolat
                     .definer = if (value.definer) |definer| @ptrCast(definer) else null,
                     .descriptor = null,
                     .index_of = null,
+                    .iterable_to_list = null,
                     .data = null,
                     .flags = 0,
                 };