Destructured promise result in {#await} becomes undefined during re-render

Describe the bug Values in a destructured promise result become undefined after a re-render.

<script>
	let test = 0;

	$: promise = Promise.resolve({ data: 1 });
</script>

{#await promise then { data }}
	{#if data}
		<button on:click={() => (test = 1)}>Test</button>
	{:else}data is {data}{/if}
{/await}

For some reason, having promise defined in a reactive statement was necessary here to reproduce the bug. In my project, I was calling a function in the {#await} block and passing it a store value.

Logs N/A

To Reproduce https://svelte.dev/repl/3fd4e2cecfa14d629961478f1dac2445?version=3.29.0

Expected behavior I would expect promise results to persist between renders.

Stacktraces N/A

Information about your Svelte project:

• Your browser and the version: (e.x. Chrome 52.1, Firefox 48.0, IE 10) Chrome, Firefox

• Your operating system: (e.x. OS X 10, Ubuntu Linux 19.10, Windows XP, etc) Arch Linux

• Svelte version (Please check you can reproduce the issue with the latest release!) 3.29.0

• Whether your project uses Webpack or Rollup N/A

Severity This is annoying, but I can avoid using destructuring here to get around the problem.

Additional context N/A

[Conduitry]

Released you fix in 3.29.3 - https://svelte.dev/repl/3fd4e2cecfa14d629961478f1dac2445?version=3.29.3 - thank you!

[hdJerry]

sweet!!, I will check now.