Multiple sequential await calls in evalCodeAsync fail with "Lifetime not alive"

[0xKoller]

When using newAsyncContext() with newAsyncifiedFunction(), the first await on a host function works correctly, but the second sequential await causes "Lifetime not alive" errors and crashes with Assertion failed: list_empty(&rt->gc_obj_list).

Reproduction:

import { newAsyncContext } from "quickjs-emscripten";

const ctx = await newAsyncContext();

const fn = ctx.newAsyncifiedFunction("get", async (...args) => {
  const path = ctx.dump(args[0]);
  return ctx.newString(JSON.stringify({ path }));
});
ctx.setProp(ctx.global, "get", fn);
fn.dispose();

// Single await - WORKS
const r1 = await ctx.evalCodeAsync(`(async () => { return await get("/a") })()`);

// Two sequential awaits - CRASHES
const r2 = await ctx.evalCodeAsync(`
  (async () => {
    const a = await get("/a");
    const b = await get("/b");  // Crashes here
    return [a, b];
  })()
`);

Expected: Both awaits resolve sequentially.
Actual: Second await causes QuickJSUseAfterFree: Lifetime not alive followed by Assertion failed: list_empty(&rt->gc_obj_list) on runtime disposal.

The issue is in quickjs-emscripten v0.32.0 with the ASYNCIFY variant.